diff --git a/compat/mingw.c b/compat/mingw.c
index 0f7077983f..f85b0d2f52 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -115,12 +115,6 @@ int regexec(const regex_t *preg, const char *string, size_t nmatch, regmatch_t p
 	return -1;
 }
 
-#undef mkdir
-int git_mkdir(const char *path, int mode)
-{
-	return mkdir(path);
-}
-
 #include <time.h>
 
 struct tm *gmtime_r(const time_t *timep, struct tm *result)
diff --git a/git-compat-util.h b/git-compat-util.h
index 2bdae6725d..4ad37467e9 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -351,7 +351,10 @@ struct sigaction {
 
 struct itimerval { struct timeval it_interval, it_value; };
 
-int git_mkdir(const char *path, int mode);
+static inline int git_mkdir(const char *path, int mode)
+{
+	return mkdir(path);
+}
 #define mkdir git_mkdir
 
 #include <time.h>