diff --git a/dtool/Package.cmake b/dtool/Package.cmake
index fbf014390c..057965957f 100644
--- a/dtool/Package.cmake
+++ b/dtool/Package.cmake
@@ -369,7 +369,7 @@ package_option(TIFF "Enable support for loading .tif images.")
 package_status(TIFF "libtiff")
 
 # OpenEXR
-find_package(OpenEXR QUIET)
+find_package(OpenEXR QUIET MODULE)
 
 package_option(OpenEXR "Enable support for loading .exr images.")