diff --git a/src/files.c b/src/files.c
index e1642f6..5c024f5 100644
--- a/src/files.c
+++ b/src/files.c
@@ -9,6 +9,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <stdio.h>
 #include <SDL.h>
 #include <zlib.h>
 #include <inttypes.h>
diff --git a/src/memory.c b/src/memory.c
index 6a6019f..5826d13 100644
--- a/src/memory.c
+++ b/src/memory.c
@@ -7,6 +7,7 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <time.h>
+#include <inttypes.h>
 #include "glue.h"
 #include "via.h"
 #include "memory.h"
diff --git a/src/sdcard.c b/src/sdcard.c
index 80c5ae5..9c7f23b 100644
--- a/src/sdcard.c
+++ b/src/sdcard.c
@@ -10,6 +10,7 @@
 #include <limits.h>
 #include <stdio.h>
 #include <stdbool.h>
+#include <string.h>
 #include "sdcard.h"
 #include "files.h"
 
diff --git a/src/testbench.c b/src/testbench.c
index 31b6ed2..ae14025 100644
--- a/src/testbench.c
+++ b/src/testbench.c
@@ -4,6 +4,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include "memory.h"
 #include "cpu/fake6502.h"
 #include "glue.h"
diff --git a/src/utf8_encode.h b/src/utf8_encode.h
index 73bb549..900b914 100644
--- a/src/utf8_encode.h
+++ b/src/utf8_encode.h
@@ -1,3 +1,5 @@
+#pragma once
+
 #include <stdint.h>
 
 /**
diff --git a/src/video_win32.c b/src/video_win32.c
index a433e8d..5d67e6a 100644
--- a/src/video_win32.c
+++ b/src/video_win32.c
@@ -3,7 +3,7 @@
 #include <SDL.h>
 #include <SDL_syswm.h>
 
-#include <Windows.h>
+#include <windows.h>
 #include <dwmapi.h>
 
 void video_win32_set_rounded_corners(SDL_Window *window)
diff --git a/src/wav_recorder.c b/src/wav_recorder.c
index 5207870..b3910b4 100644
--- a/src/wav_recorder.c
+++ b/src/wav_recorder.c
@@ -9,6 +9,7 @@
 #include "glue.h"
 #include <string.h>
 #include <stdlib.h>
+#include <stdio.h>
 
 #pragma pack(push, 1)
 typedef struct {