diff --git a/contrib/mdx/CMakeLists.txt b/contrib/mdx/CMakeLists.txt
index 9f5f3ee..84ae512 100644
--- a/contrib/mdx/CMakeLists.txt
+++ b/contrib/mdx/CMakeLists.txt
@@ -14,7 +14,7 @@ if(TARGET Motif::Motif AND TARGET X11::Xt AND TARGET X11::X11)
         X11::Xt
         X11::X11
         )
-    install(TARGET mdx
+    install(TARGETS mdx
             RUNTIME DESTINATION bin
             )
 endif()