diff --git a/dtool/Package.cmake b/dtool/Package.cmake
index 956814c11b..6de060f922 100644
--- a/dtool/Package.cmake
+++ b/dtool/Package.cmake
@@ -11,7 +11,7 @@ if(THIRDPARTY_DIRECTORY)
 
   if(NOT _policy_cmp0074 STREQUAL "NEW")
     message(FATAL_ERROR
-      "Your version of CMake is too old; please upgrade or unset THIRDPARTY_DIRCTORY to continue.")
+      "Your version of CMake is too old; please upgrade or unset THIRDPARTY_DIRECTORY to continue.")
   endif()
 
   # Dig up the actual "libs" directory