diff --git a/CMakeLists.txt b/CMakeLists.txt
index fe63e2ab50..f41a801822 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -508,10 +508,10 @@ include_directories(${IGDRCL_SOURCE_DIR}/runtime/gmm_helper/${BRANCH_DIR_SUFFIX}
 set(HW_SRC_INCLUDE_PATH ${IGDRCL_SOURCE_DIR}/runtime/gen_common)
 
 if(HAVE_INSTRUMENTATION)
-  set(${IGDRCL__INSTRUMENTATION_DIR_SUFFIX} ${BRANCH_DIR_SUFFIX})
+  set(IGDRCL__INSTRUMENTATION_DIR_SUFFIX ${BRANCH_DIR_SUFFIX})
   include_directories($<TARGET_PROPERTY:instrumentation_umd,INTERFACE_INCLUDE_DIRECTORIES>)
 else()
-  set(${IGDRCL__INSTRUMENTATION_DIR_SUFFIX} "/")
+  set(IGDRCL__INSTRUMENTATION_DIR_SUFFIX "/")
 endif()
 include_directories(${IGDRCL_SOURCE_DIR}/runtime/instrumentation${IGDRCL__INSTRUMENTATION_DIR_SUFFIX})