diff --git a/Mk/Uses/cmake.mk b/Mk/Uses/cmake.mk
--- a/Mk/Uses/cmake.mk
+++ b/Mk/Uses/cmake.mk
@@ -79,10 +79,10 @@
 			-DCMAKE_CXX_COMPILER:STRING="${CXX}" \
 			-DCMAKE_C_FLAGS:STRING="${CFLAGS}" \
 			-DCMAKE_C_FLAGS_DEBUG:STRING="${CFLAGS}" \
-			-DCMAKE_C_FLAGS_RELEASE:STRING="${CFLAGS}" \
+			-DCMAKE_C_FLAGS_RELEASE:STRING="${CFLAGS} -DNDEBUG" \
 			-DCMAKE_CXX_FLAGS:STRING="${CXXFLAGS}" \
 			-DCMAKE_CXX_FLAGS_DEBUG:STRING="${CXXFLAGS}" \
-			-DCMAKE_CXX_FLAGS_RELEASE:STRING="${CXXFLAGS}" \
+			-DCMAKE_CXX_FLAGS_RELEASE:STRING="${CXXFLAGS} -DNDEBUG" \
 			-DCMAKE_EXE_LINKER_FLAGS:STRING="${LDFLAGS}" \
 			-DCMAKE_MODULE_LINKER_FLAGS:STRING="${LDFLAGS}" \
 			-DCMAKE_SHARED_LINKER_FLAGS:STRING="${LDFLAGS}" \