diff --git a/cmake/system.cmake b/cmake/system.cmake
index d6f021ade..1c2093efe 100644
--- a/cmake/system.cmake
+++ b/cmake/system.cmake
@@ -155,7 +155,7 @@ else()
 endif ()
 
 include("${PROJECT_SOURCE_DIR}/cmake/prebuild.cmake")
-if (DEFINEDt BINARY)
+if (DEFINED BINARY)
   message(STATUS "Compiling a ${BINARY}-bit binary.")
 endif ()
 if (NOT DEFINED NEED_PIC)