diff --git a/config.mak.uname b/config.mak.uname
index 50f4ce0adb7f4f..9d4ffc4ee39544 100644
--- a/config.mak.uname
+++ b/config.mak.uname
@@ -518,7 +518,7 @@ ifneq (,$(findstring MINGW,$(uname_S)))
 	SPARSE_FLAGS = -Wno-one-bit-signed-bitfield
 ifneq (,$(wildcard ../THIS_IS_MSYSGIT))
 	htmldir = share/doc/git/$(firstword $(subst -, ,$(GIT_VERSION)))/html
-	prefix =
+	prefix = /mingw/
 	INSTALL = /bin/install
 	EXTLIBS += /mingw/lib/libz.a
 	NO_R_TO_GCC_LINKER = YesPlease