diff --git a/src/detection/os/os_android.c b/src/detection/os/os_android.c
index 17752a27b..7d39954d6 100644
--- a/src/detection/os/os_android.c
+++ b/src/detection/os/os_android.c
@@ -5,8 +5,6 @@ void ffDetectOSImpl(FFOSResult* os)
 {
     ffStrbufSetStatic(&os->name, "Android");
 
-    ffStrbufSetStatic(&os->prettyName, "Android");
-
     ffStrbufSetStatic(&os->id, "android");
 
     ffSettingsGetAndroidProperty("ro.build.version.release", &os->version);
diff --git a/src/detection/os/os_apple.m b/src/detection/os/os_apple.m
index b86202b1e..dc8e30a12 100644
--- a/src/detection/os/os_apple.m
+++ b/src/detection/os/os_apple.m
@@ -54,18 +54,18 @@ static bool detectOSCodeName(FFOSResult* os)
                 case 14: ffStrbufSetStatic(&os->codename, "Mojave"); return true;
                 case 13: ffStrbufSetStatic(&os->codename, "High Sierra"); return true;
                 case 12: ffStrbufSetStatic(&os->codename, "Sierra"); return true;
-                case 11: ffStrbufSetStatic(&os->codename, "El Capitan"); ffStrbufSetStatic(&os->prettyName, "OS X"); return true;
-                case 10: ffStrbufSetStatic(&os->codename, "Yosemite"); ffStrbufSetStatic(&os->prettyName, "OS X"); return true;
-                case 9: ffStrbufSetStatic(&os->codename, "Mavericks"); ffStrbufSetStatic(&os->prettyName, "OS X"); return true;
-                case 8: ffStrbufSetStatic(&os->codename, "Mountain Lion"); ffStrbufSetStatic(&os->prettyName, "OS X"); return true;
-                case 7: ffStrbufSetStatic(&os->codename, "Lion"); ffStrbufSetStatic(&os->prettyName, "Mac OS X"); return true;
-                case 6: ffStrbufSetStatic(&os->codename, "Snow Leopard"); ffStrbufSetStatic(&os->prettyName, "Mac OS X"); return true;
-                case 5: ffStrbufSetStatic(&os->codename, "Leopard"); ffStrbufSetStatic(&os->prettyName, "Mac OS X"); return true;
-                case 4: ffStrbufSetStatic(&os->codename, "Tiger"); ffStrbufSetStatic(&os->prettyName, "Mac OS X"); return true;
+                case 11: ffStrbufSetStatic(&os->codename, "El Capitan"); return true;
+                case 10: ffStrbufSetStatic(&os->codename, "Yosemite"); return true;
+                case 9: ffStrbufSetStatic(&os->codename, "Mavericks"); return true;
+                case 8: ffStrbufSetStatic(&os->codename, "Mountain Lion"); return true;
+                case 7: ffStrbufSetStatic(&os->codename, "Lion"); return true;
+                case 6: ffStrbufSetStatic(&os->codename, "Snow Leopard"); return true;
+                case 5: ffStrbufSetStatic(&os->codename, "Leopard"); return true;
+                case 4: ffStrbufSetStatic(&os->codename, "Tiger"); return true;
                 case 3: ffStrbufSetStatic(&os->codename, "Panther"); ffStrbufSetStatic(&os->prettyName, "Mac OS X"); return true;
-                case 2: ffStrbufSetStatic(&os->codename, "Jaguar"); ffStrbufSetStatic(&os->prettyName, "Mac OS X"); return true;
-                case 1: ffStrbufSetStatic(&os->codename, "Puma"); ffStrbufSetStatic(&os->prettyName, "Mac OS X"); return true;
-                case 0: ffStrbufSetStatic(&os->codename, "Cheetah"); ffStrbufSetStatic(&os->prettyName, "Mac OS X"); return true;
+                case 2: ffStrbufSetStatic(&os->codename, "Jaguar"); return true;
+                case 1: ffStrbufSetStatic(&os->codename, "Puma"); return true;
+                case 0: ffStrbufSetStatic(&os->codename, "Cheetah"); return true;
             }
         }
     }
@@ -106,8 +106,6 @@ void ffDetectOSImpl(FFOSResult* os)
     if(os->buildID.length == 0)
         ffSysctlGetString("kern.osversion", &os->buildID);
 
-    if(os->prettyName.length == 0)
-        ffStrbufSetStatic(&os->prettyName, "macOS");
     ffStrbufAppend(&os->versionID, &os->version);
 
     if(!detectOSCodeName(os))
diff --git a/src/detection/os/os_windows.c b/src/detection/os/os_windows.c
index dda2004c5..ae3ff5083 100644
--- a/src/detection/os/os_windows.c
+++ b/src/detection/os/os_windows.c
@@ -13,6 +13,7 @@ void ffDetectOSImpl(FFOSResult* os)
     const wchar_t* rawName = BrandingFormatString(L"%WINDOWS_LONG%");
     ffStrbufSetWS(&os->variant, rawName);
     GlobalFree((HGLOBAL)rawName);
+    ffStrbufSet(&os->prettyName, &os->variant);
     ffStrbufTrimRight(&os->variant, ' ');
 
     //WMI returns the "Microsoft" prefix while BrandingFormatString doesn't. Make them consistent.
@@ -22,14 +23,12 @@ void ffDetectOSImpl(FFOSResult* os)
     if(ffStrbufStartsWithS(&os->variant, "Windows "))
     {
         ffStrbufAppendS(&os->name, "Windows");
-        ffStrbufAppendS(&os->prettyName, "Windows");
 
         ffStrbufSubstrAfter(&os->variant, strlen("Windows ") - 1);
 
         if(ffStrbufStartsWithS(&os->variant, "Server "))
         {
             ffStrbufAppendS(&os->name, " Server");
-            ffStrbufAppendS(&os->prettyName, " Server");
             ffStrbufSubstrAfter(&os->variant, strlen(" Server") - 1);
         }
 
@@ -38,7 +37,7 @@ void ffDetectOSImpl(FFOSResult* os)
         ffStrbufSubstrAfter(&os->variant, index);
 
         // Windows Server 20xx Rx
-        if(ffStrbufEndsWithC(&os->prettyName, 'r'))
+        if(ffStrbufEndsWithC(&os->name, 'r'))
         {
             if(os->variant.chars[0] == 'R' &&
                 ffCharIsDigit(os->variant.chars[1]) &&
@@ -56,6 +55,6 @@ void ffDetectOSImpl(FFOSResult* os)
         ffStrbufClear(&os->variant);
     }
 
-    ffStrbufAppendF(&os->id, "%*s %*s", os->prettyName.length, os->prettyName.chars, os->version.length, os->version.chars);
+    ffStrbufAppendF(&os->id, "%s %s", os->name.chars, os->version.chars);
     ffStrbufSetStatic(&os->idLike, "Windows");
 }
diff --git a/src/modules/os/os.c b/src/modules/os/os.c
index 10df93b0f..b26ef8600 100644
--- a/src/modules/os/os.c
+++ b/src/modules/os/os.c
@@ -51,38 +51,6 @@ static void buildOutputDefault(const FFOSResult* os, FFstrbuf* result)
         ffStrbufAppend(result, &os->variantID);
         ffStrbufAppendC(result, ')');
     }
-
-    //Append architecture if it is missing
-    if(!ffStrbufContainIgnCase(result, &instance.state.platform.sysinfo.architecture))
-    {
-        ffStrbufAppendC(result, ' ');
-        ffStrbufAppend(result, &instance.state.platform.sysinfo.architecture);
-    }
-}
-
-static void buildOutputNixOS(const FFOSResult* os, FFstrbuf* result)
-{
-    ffStrbufAppendS(result, "NixOS");
-
-    if(os->buildID.length > 0)
-    {
-        ffStrbufAppendC(result, ' ');
-        ffStrbufAppend(result, &os->buildID);
-    }
-
-    if(os->codename.length > 0)
-    {
-        ffStrbufAppendS(result, " (");
-        ffStrbufAppendC(result, (char) toupper(os->codename.chars[0]));
-        ffStrbufAppendS(result, os->codename.chars + 1);
-        ffStrbufAppendC(result, ')');
-    }
-
-    if(instance.state.platform.sysinfo.architecture.length > 0)
-    {
-        ffStrbufAppendC(result, ' ');
-        ffStrbufAppend(result, &instance.state.platform.sysinfo.architecture);
-    }
 }
 
 void ffPrintOS(FFOSOptions* options)
@@ -99,11 +67,18 @@ void ffPrintOS(FFOSOptions* options)
     {
         FF_STRBUF_AUTO_DESTROY result = ffStrbufCreate();
 
-        if(ffStrbufIgnCaseCompS(&os->id, "nixos") == 0)
-            buildOutputNixOS(os, &result);
+        if(os->prettyName.length > 0)
+            ffStrbufAppend(&result, &os->prettyName);
         else
             buildOutputDefault(os, &result);
 
+        //Append architecture if it is missing
+        if(!ffStrbufContainIgnCase(&result, &instance.state.platform.sysinfo.architecture))
+        {
+            ffStrbufAppendC(&result, ' ');
+            ffStrbufAppend(&result, &instance.state.platform.sysinfo.architecture);
+        }
+
         ffPrintLogoAndKey(FF_OS_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT);
         ffStrbufPutTo(&result, stdout);
     }
@@ -195,7 +170,7 @@ static FFModuleBaseInfo ffModuleInfo = {
     .formatArgs = FF_FORMAT_ARG_LIST(((FFModuleFormatArg[]) {
         {"Name of the kernel", "sysname"},
         {"Name of the OS", "name"},
-        {"Pretty name of the OS", "pretty-name"},
+        {"Pretty name of the OS, if available", "pretty-name"},
         {"ID of the OS", "id"},
         {"ID like of the OS", "id-like"},
         {"Variant of the OS", "variant"},