diff --git a/lib/compat/mingw.c b/lib/compat/mingw.c
index 26aea47c81..2f6b4f1e2f 100644
--- a/lib/compat/mingw.c
+++ b/lib/compat/mingw.c
@@ -1753,7 +1753,7 @@ static const char *quote_arg_msys2(const char *arg)
 
 static const char *parse_interpreter(const char *cmd)
 {
-	static char buf[100];
+	static char buf[MAX_PATH];
 	char *p, *opt;
 	ssize_t n; /* read() can return negative values */
 	int fd;