diff --git a/modules/sfm/CMakeLists.txt b/modules/sfm/CMakeLists.txt
index 2a7869940..4377a6165 100644
--- a/modules/sfm/CMakeLists.txt
+++ b/modules/sfm/CMakeLists.txt
@@ -9,17 +9,17 @@ find_package(Ceres QUIET)
 if(NOT Gflags_FOUND)  # Ceres find gflags on the own, so separate search isn't necessary
   find_package(Gflags QUIET)
 endif()
-if(NOT Glog_FOUND)  # Ceres find glog on the own, so separate search isn't necessary
+if(NOT (Glog_FOUND OR glog_FOUND))  # Ceres find glog on the own, so separate search isn't necessary
   find_package(Glog QUIET)
 endif()
 
-if(NOT Gflags_FOUND OR NOT Glog_FOUND)
+if(NOT Gflags_FOUND OR NOT (Glog_FOUND OR glog_FOUND))
   # try local search scripts
   list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/cmake")
   if(NOT Gflags_FOUND)
     find_package(Gflags QUIET)
   endif()
-  if(NOT Glog_FOUND)
+  if(NOT (Glog_FOUND OR glog_FOUND))
     find_package(Glog QUIET)
   endif()
 endif()