diff --git a/dev/core/src/com/google/gwt/dev/shell/SuperDevListener.java b/dev/core/src/com/google/gwt/dev/shell/SuperDevListener.java
index e824e8f..76cb583 100644
--- a/dev/core/src/com/google/gwt/dev/shell/SuperDevListener.java
+++ b/dev/core/src/com/google/gwt/dev/shell/SuperDevListener.java
@@ -170,9 +170,11 @@
     }
     for (String regex : options.getJsInteropExportFilter().getValues()) {
       if (regex.startsWith("-")) {
-        args.add("-excludeJsInteropExports " + regex.substring(1));
+        args.add("-excludeJsInteropExports");
+        args.add(regex.substring(1));
       } else {
-        args.add("-includeJsInteropExports " + regex);
+        args.add("-includeJsInteropExports");
+        args.add(regex);
       }
     }
     if (!options.isIncrementalCompileEnabled()) {