diff --git a/js/src/js.msg b/js/src/js.msg
index f02bd06ab8e..028555c226b 100644
--- a/js/src/js.msg
+++ b/js/src/js.msg
@@ -371,3 +371,4 @@ MSG_DEF(JSMSG_DEBUG_NOT_DEBUGGING,    284, 0, JSEXN_ERR, "can't set breakpoint:
 MSG_DEF(JSMSG_DEBUG_COMPARTMENT_MISMATCH, 285, 2, JSEXN_TYPEERR, "{0}: descriptor .{1} property is an object in a different compartment than the target object")
 MSG_DEF(JSMSG_DEBUG_NOT_SCRIPT_FRAME, 286, 0, JSEXN_ERR, "stack frame is not running JavaScript code")
 MSG_DEF(JSMSG_CANT_WATCH_PROP,        287, 0, JSEXN_TYPEERR, "properties whose names are objects can't be watched")
+MSG_DEF(JSMSG_CSP_BLOCKED_EVAL,       288, 0, JSEXN_ERR, "call to eval() blocked by CSP")
diff --git a/js/src/jsobj.cpp b/js/src/jsobj.cpp
index 9137a2c1109..c55dde5b12c 100644
--- a/js/src/jsobj.cpp
+++ b/js/src/jsobj.cpp
@@ -1154,7 +1154,7 @@ EvalKernel(JSContext *cx, const CallArgs &args, EvalType evalType, StackFrame *c
     AssertInnerizedScopeChain(cx, scopeobj);
 
     if (!scopeobj.getGlobal()->isRuntimeCodeGenEnabled(cx)) {
-        JS_ReportError(cx, "call to eval() blocked by CSP");
+        JS_ReportErrorNumber(cx, js_GetErrorMessage, NULL, JSMSG_CSP_BLOCKED_EVAL);
         return false;
     }