diff --git a/cmake/Modules/FindIFEM.cmake b/cmake/Modules/FindIFEM.cmake
index 94ea665a..282200ee 100644
--- a/cmake/Modules/FindIFEM.cmake
+++ b/cmake/Modules/FindIFEM.cmake
@@ -2,14 +2,14 @@ IF(IFEM_INCLUDES AND IFEM_LIBRARIES)
   SET(IFEM_FIND_QUIETLY TRUE)
 ENDIF(IFEM_INCLUDES AND IFEM_LIBRARIES)
 
-IF((NOT DEFINED(FORCE_SYSTEM_IFEM)) OR (NOT ${FORCE_SYSTEM_IFEM}))
+IF(NOT DEFINED FORCE_SYSTEM_IFEM OR NOT ${FORCE_SYSTEM_IFEM})
   FIND_PATH(IFEM_INCLUDES
             NAMES
             SIMbase.h
             PATHS
             ${PROJECT_SOURCE_DIR}/../../src/
             PATH_SUFFIXES SIM)
-ENDIF((NOT DEFINED(FORCE_SYSTEM_IFEM)) OR (NOT ${FORCE_SYSTEM_IFEM}))
+ENDIF(NOT DEFINED FORCE_SYSTEM_IFEM OR NOT ${FORCE_SYSTEM_IFEM})
 
 # Build is in-tree
 IF(IFEM_INCLUDES)