diff --git a/libidn/stringprep.h b/libidn/stringprep.h
index 9894a1644f..5f504e8e81 100644
--- a/libidn/stringprep.h
+++ b/libidn/stringprep.h
@@ -29,7 +29,11 @@ extern "C"
 
 #include <stddef.h>		/* size_t */
 #include <unistd.h>		/* ssize_t */
-#include <idn-int.h>		/* uint32_t */
+#ifdef _LIBC
+# include <stdint.h>
+#else
+# include <idn-int.h>		/* uint32_t */
+#endif
 
 #define STRINGPREP_VERSION "0.4.1"