diff --git a/src/Audio/ISndSource.h b/src/Audio/ISndSource.h
index 207abc0..a1336ef 100644
--- a/src/Audio/ISndSource.h
+++ b/src/Audio/ISndSource.h
@@ -1,7 +1,7 @@
 #ifndef GLTEST_ISNDSOURCE_H
 #define GLTEST_ISNDSOURCE_H
 
-#include <cstdint>
+#include <cstddef>
 
 struct ISndSource {
 	virtual int getChannelCount() const = 0;