diff --git a/Makefile b/Makefile
index 462eec9742..c45b29653e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+.POSIX:
+
 include common.mk
 
 STATIC_VERSION=$(shell static/gen-static-ver $(realpath $(CURDIR)/src/github.com/docker/docker) $(VERSION))
diff --git a/deb/Makefile b/deb/Makefile
index 75725b5c25..305fd12b42 100644
--- a/deb/Makefile
+++ b/deb/Makefile
@@ -1,3 +1,5 @@
+.POSIX:
+
 include ../common.mk
 
 PLUGINS_DIR=$(realpath $(CURDIR)/../plugins)
diff --git a/rpm/Makefile b/rpm/Makefile
index 64dab0f0c8..71719dceee 100644
--- a/rpm/Makefile
+++ b/rpm/Makefile
@@ -1,3 +1,5 @@
+.POSIX:
+
 include ../common.mk
 
 PLUGINS_DIR=$(realpath $(CURDIR)/../plugins)
diff --git a/static/Makefile b/static/Makefile
index 6d755bc8a0..affe10ba4a 100644
--- a/static/Makefile
+++ b/static/Makefile
@@ -1,3 +1,5 @@
+.POSIX:
+
 include ../common.mk
 
 CLI_DIR=$(realpath $(CURDIR)/../src/github.com/docker/cli)