diff --git a/CMakeModules/FindGsm.cmake b/CMakeModules/FindGsm.cmake
index 1add357c1..a138ebe99 100644
--- a/CMakeModules/FindGsm.cmake
+++ b/CMakeModules/FindGsm.cmake
@@ -31,7 +31,6 @@ else (GSM_LIBRARIES AND GSM_INCLUDE_DIRS)
 
   find_path(GSM_INCLUDE_DIR
     NAMES
-      gsm/gsm.h
       gsm.h
     PATHS
       ${_GsmIncDir}
@@ -39,6 +38,8 @@ else (GSM_LIBRARIES AND GSM_INCLUDE_DIRS)
       /usr/local/include
       /opt/local/include
       /sw/include
+    PATH_SUFFIXES
+      gsm
   )
 
   find_library(GSM_LIBRARY