diff --git a/suppression/asan.supp b/suppression/asan.supp
index 5d1c428..c71c510 100644
--- a/suppression/asan.supp
+++ b/suppression/asan.supp
@@ -1,3 +1,4 @@
 leak:libheif.so.1
 leak:libde265.so.0
 leak:libx265.so.179
+leak:libfontconfig.so.1
\ No newline at end of file
diff --git a/tests/gdtest/gdtest.c b/tests/gdtest/gdtest.c
index 4150238..69efda0 100644
--- a/tests/gdtest/gdtest.c
+++ b/tests/gdtest/gdtest.c
@@ -88,13 +88,13 @@ int gdTestIsDir(char *path) {
 		return 0;
 	}
 	if (data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
-		return 0;
-	} else {
 		return 1;
+	} else {
+		return 0;
 	}
 #else
 	struct stat st;
-	if (lstat(path, &st) != 0)
+	if (lstat(path, &st) == 0)
 
 	if (S_ISDIR(st.st_mode))
 		return 1;