diff --git a/classes/populate_sdk_qt6_base.bbclass b/classes/populate_sdk_qt6_base.bbclass
index f4aa1f0..d66db42 100644
--- a/classes/populate_sdk_qt6_base.bbclass
+++ b/classes/populate_sdk_qt6_base.bbclass
@@ -98,7 +98,6 @@ set(CMAKE_C_COMPILER "${SDKPATHNATIVE}${bindir}/${TARGET_SYS}/${TARGET_PREFIX}gc
 set(CMAKE_CXX_COMPILER "${SDKPATHNATIVE}${bindir}/${TARGET_SYS}/${TARGET_PREFIX}g++${EXE_EXT}")
 
 set(TARGET_COMPILER_FLAGS "${TARGET_CC_ARCH} --sysroot=${SDKTARGETSYSROOT}")
-set(TARGET_COMPILER_FLAGS_RELEASE "${TARGET_CFLAGS}")
 set(TARGET_LINKER_FLAGS "${TARGET_LDFLAGS}")
 
 include(CMakeInitializeConfigs)