diff --git a/src/physicsfswrapper.cpp b/src/physicsfswrapper.cpp
index 21949dc..40facf1 100644
--- a/src/physicsfswrapper.cpp
+++ b/src/physicsfswrapper.cpp
@@ -58,6 +58,7 @@ namespace cloonel {
 	///-------------------------------------------------------------------------
 	PhysicsFSWrapper::~PhysicsFSWrapper() noexcept {
 		const bool succeeded = static_cast<bool>(PHYSFS_deinit());
+		(void)succeeded;
 		assert(succeeded);
 	}