diff --git a/src/bg/ReportingCSP.js b/src/bg/ReportingCSP.js
index 65268b2..cf7f97b 100644
--- a/src/bg/ReportingCSP.js
+++ b/src/bg/ReportingCSP.js
@@ -7,7 +7,7 @@ function ReportingCSP(marker, reportURI = "") {
   
   return Object.assign(
     new CapsCSP(new NetCSP( 
-      reportURI ? `report-uri ${reportURI};` : marker
+      reportURI ? `report-uri ${reportURI}` : marker
     )),
     {
       reportURI,
diff --git a/src/lib/NetCSP.js b/src/lib/NetCSP.js
index 01f214a..4891900 100644
--- a/src/lib/NetCSP.js
+++ b/src/lib/NetCSP.js
@@ -19,7 +19,7 @@ class NetCSP extends CSP {
   }
 
   build(...directives) {
-    return `${this.start}${super.build(...directives)}`;
+    return `${this.start};${super.build(...directives)}`;
   }
 
   cleanup(headers) {