diff --git a/cmake/FindGEOS.cmake b/cmake/FindGEOS.cmake
index 94965985cfa..90810b4e900 100644
--- a/cmake/FindGEOS.cmake
+++ b/cmake/FindGEOS.cmake
@@ -157,8 +157,9 @@ ELSE(WIN32)
 ENDIF(WIN32)
 
 IF(GEOS_INCLUDE_DIR AND NOT GEOS_VERSION)
-  FILE(READ ${GEOS_INCLUDE_DIR}/geos/version.h VERSIONFILE)
-  STRING(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" GEOS_VERSION ${VERSIONFILE})
+  FILE(READ ${GEOS_INCLUDE_DIR}/geos_c.h VERSIONFILE)
+  STRING(REGEX MATCH "#define GEOS_VERSION \"[0-9]+\\.[0-9]+\\.[0-9]+\"" GEOS_VERSION ${VERSIONFILE})
+  STRING(REGEX MATCH "[0-9]+\\.[0-9]\\.[0-9]+" GEOS_VERSION ${GEOS_VERSION})
 ENDIF(GEOS_INCLUDE_DIR AND NOT GEOS_VERSION)
 
 IF (GEOS_INCLUDE_DIR AND GEOS_LIBRARY)