diff --git a/fltk-config.cmake.in b/fltk-config.cmake.in
index 121b109a4..5e724ccd3 100644
--- a/fltk-config.cmake.in
+++ b/fltk-config.cmake.in
@@ -317,7 +317,8 @@ if test -n "$post"; then
 	<string>$post</string>
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
-    </dict>
+	<key>NSHighResolutionCapable</key>
+	<true/>
 </plist>
 EOF
 	    ;;
diff --git a/fltk-config.in b/fltk-config.in
index 5463c3f51..0da30ad09 100755
--- a/fltk-config.in
+++ b/fltk-config.in
@@ -317,6 +317,8 @@ if test -n "$post"; then
 	<string>$post</string>
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
+	<key>NSHighResolutionCapable</key>
+	<true/>
     </dict>
 </plist>
 EOF