diff --git a/include/SharedMemory.h b/include/SharedMemory.h
index 1ecf86be78c..0dd7c133801 100644
--- a/include/SharedMemory.h
+++ b/include/SharedMemory.h
@@ -77,9 +77,9 @@ class SharedMemoryData
 
 	static inline std::string createKey() {
 #if defined(LMMS_BUILD_APPLE) || defined(LMMS_BUILD_FREEBSD) || defined(LMMS_BUILD_OPENBSD)
-		const int &length = 30; // PSHMNAMLEN=31
+		constexpr int length = 30; // PSHMNAMLEN=31
 #else
-		const int &length = 32; // mimic UUID
+		constexpr int length = 32; // mimic UUID
 #endif
 		std::string key;
 		std::random_device rd;