diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1846cbe97c..8cf40d7652 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -236,12 +236,12 @@ set_package_properties(Libdrm PROPERTIES TYPE REQUIRED PURPOSE "Required for drm
 
 find_package(gbm)
 set_package_properties(gbm PROPERTIES TYPE REQUIRED PURPOSE "Required for egl output of drm backend.")
-if (${gbm_VERSION} GREATER_EQUAL 21.1)
+if (gbm_VERSION VERSION_GREATER_EQUAL 21.1)
     set(HAVE_GBM_BO_GET_FD_FOR_PLANE 1)
 else()
     set(HAVE_GBM_BO_GET_FD_FOR_PLANE 0)
 endif()
-if (${gbm_VERSION} GREATER_EQUAL 21.3)
+if (gbm_VERSION VERSION_GREATER_EQUAL 21.3)
     set(HAVE_GBM_BO_CREATE_WITH_MODIFIERS2 1)
 else()
     set(HAVE_GBM_BO_CREATE_WITH_MODIFIERS2 0)