diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7391bf922f..79455cbffa 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -60,12 +60,12 @@ FIND_PROGRAM (GUILE_EXECUTABLE guile)
 
 # Check for guile version > 1.7, i.e. guile-1.8.x?
 IF (GUILE_INCLUDE_DIR)
-  IF (Guile_FIND_VERSION_MAJOR AND ${GUILE_VERSION_MAJOR} EQUAL 1
-      AND Guile_FIND_VERSION_MINOR AND ${GUILE_VERSION_MINOR} GREATER 7)
+  IF (${GUILE_VERSION_MAJOR} EQUAL 1
+      AND ${GUILE_VERSION_MINOR} GREATER 7)
     # Yes, define this macro
     ADD_DEFINITIONS (-DHAVE_GUILE18)
-  ENDIF (Guile_FIND_VERSION_MAJOR AND ${GUILE_VERSION_MAJOR} EQUAL 1
-         AND Guile_FIND_VERSION_MINOR AND ${GUILE_VERSION_MINOR} GREATER 7)
+  ENDIF (${GUILE_VERSION_MAJOR} EQUAL 1
+         AND ${GUILE_VERSION_MINOR} GREATER 7)
 ELSE (GUILE_INCLUDE_DIR)
   MESSAGE (SEND_ERROR "Guile was not found, but is required. Please set GUILE_LIBRARY and GUILE_INCLUDE_DIR.")
 ENDIF (GUILE_INCLUDE_DIR)