diff --git a/MagickCore/studio.h b/MagickCore/studio.h
index cdd04f7eba..9118c287b7 100644
--- a/MagickCore/studio.h
+++ b/MagickCore/studio.h
@@ -236,7 +236,7 @@ extern int vsnprintf(char *,size_t,const char *,va_list);
 #if defined(S_IRUSR) && defined(S_IWUSR)
 # define P_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)
 # define S_MODE (S_IRUSR | S_IWUSR)
-#elif defined (MAGICKCORE_WINDOWS_SUPPORT)
+#elif defined (MAGICKCORE_WINDOWS_SUPPORT) && !defined(__MINGW32__)
 # define P_MODE (_S_IREAD | _S_IWRITE)
 # define S_MODE (_S_IREAD | _S_IWRITE)
 #else
diff --git a/MagickWand/studio.h b/MagickWand/studio.h
index 96c902ec4e..ba0decc48b 100644
--- a/MagickWand/studio.h
+++ b/MagickWand/studio.h
@@ -213,7 +213,7 @@ extern int vsnprintf(char *,size_t,const char *,va_list);
 #if defined(S_IRUSR) && defined(S_IWUSR)
 # define P_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)
 # define S_MODE (S_IRUSR | S_IWUSR)
-#elif defined (MAGICKWAND_WINDOWS_SUPPORT)
+#elif defined (MAGICKWAND_WINDOWS_SUPPORT) && !defined(__MINGW32__)
 # define P_MODE (_S_IREAD | _S_IWRITE)
 # define S_MODE (_S_IREAD | _S_IWRITE)
 #else