diff --git a/libzsync/sha1.h b/libzsync/sha1.h
index 3946505..8840570 100644
--- a/libzsync/sha1.h
+++ b/libzsync/sha1.h
@@ -11,9 +11,10 @@
 
 #include "config.h"
 
-#ifdef HAVE_INTTYPES_H
+#if defined(HAVE_INTTYPES_H) && defined(__GLIBC__)
 #include <inttypes.h>
 #else
+#include <stdint.h>
 #include <sys/types.h>
 #endif