diff --git a/content/base/src/CSPUtils.jsm b/content/base/src/CSPUtils.jsm
index bc4da2dd3b7c..d2aed262d3e4 100644
--- a/content/base/src/CSPUtils.jsm
+++ b/content/base/src/CSPUtils.jsm
@@ -1772,9 +1772,6 @@ this.CSPNonceSource = function CSPNonceSource() {
 }
 
 CSPNonceSource.fromString = function(aStr, aCSPRep) {
-  if (!CSPPrefObserver.experimentalEnabled)
-    return null;
-
   let nonce = R_NONCESRC.exec(aStr)[1];
   if (!nonce) {
     cspError(aCSPRep, "Error in parsing nonce-source from string: nonce was empty");
@@ -1789,8 +1786,6 @@ CSPNonceSource.fromString = function(aStr, aCSPRep) {
 CSPNonceSource.prototype = {
 
   permits: function(aContext) {
-    if (!CSPPrefObserver.experimentalEnabled) return false;
-
     if (aContext instanceof Ci.nsIDOMHTMLElement) {
       return this._nonce === aContext.getAttribute('nonce');
     } else if (typeof aContext === 'string') {
@@ -1822,9 +1817,6 @@ this.CSPHashSource = function CSPHashSource() {
 }
 
 CSPHashSource.fromString = function(aStr, aCSPRep) {
-  if (!CSPPrefObserver.experimentalEnabled)
-    return null;
-
   let hashSrcMatch = R_HASHSRC.exec(aStr);
   let algo = hashSrcMatch[1];
   let hash = hashSrcMatch[2];
@@ -1846,8 +1838,6 @@ CSPHashSource.fromString = function(aStr, aCSPRep) {
 CSPHashSource.prototype = {
 
   permits: function(aContext) {
-    if (!CSPPrefObserver.experimentalEnabled) return false;
-
     let ScriptableUnicodeConverter =
       Components.Constructor("@mozilla.org/intl/scriptableunicodeconverter",
                              "nsIScriptableUnicodeConverter");
diff --git a/content/base/src/contentSecurityPolicy.js b/content/base/src/contentSecurityPolicy.js
index 3911bc7ddc6f..99cf6197456c 100644
--- a/content/base/src/contentSecurityPolicy.js
+++ b/content/base/src/contentSecurityPolicy.js
@@ -208,9 +208,6 @@ ContentSecurityPolicy.prototype = {
   },
 
   getAllowsNonce: function(aNonce, aContentType, shouldReportViolation) {
-    if (!CSPPrefObserver.experimentalEnabled)
-      return false;
-
     if (!(aContentType == Ci.nsIContentPolicy.TYPE_SCRIPT ||
           aContentType == Ci.nsIContentPolicy.TYPE_STYLESHEET)) {
       CSPdebug("Nonce check requested for an invalid content type (not script or style): " + aContentType);
@@ -223,7 +220,9 @@ ContentSecurityPolicy.prototype = {
 
     shouldReportViolation.value = this._policies.some(function(policy, i) {
       // Don't report a violation if the policy didn't use nonce-source
-      return policy._directives[directive]._hasNonceSource && !policyAllowsNonce[i];
+      return policy._directives.hasOwnProperty(directive) &&
+             policy._directives[directive]._hasNonceSource &&
+             !policyAllowsNonce[i];
     });
 
     // allow it to execute?  (Do all the policies allow it to execute)?
@@ -233,9 +232,6 @@ ContentSecurityPolicy.prototype = {
   },
 
   getAllowsHash: function(aContent, aContentType, shouldReportViolation) {
-    if (!CSPPrefObserver.experimentalEnabled)
-      return false;
-
     if (!(aContentType == Ci.nsIContentPolicy.TYPE_SCRIPT ||
           aContentType == Ci.nsIContentPolicy.TYPE_STYLESHEET)) {
       CSPdebug("Hash check requested for an invalid content type (not script or style): " + aContentType);
@@ -248,7 +244,9 @@ ContentSecurityPolicy.prototype = {
 
     shouldReportViolation.value = this._policies.some(function(policy, i) {
       // Don't report a violation if the policy didn't use hash-source
-      return policy._directives[directive]._hasHashSource && !policyAllowsHash[i];
+      return policy._directives.hasOwnProperty(directive) &&
+             policy._directives[directive]._hasHashSource &&
+             !policyAllowsHash[i];
     });
 
     // allow it to execute?  (Do all the policies allow it to execute)?
diff --git a/content/base/test/csp/test_hash_source.html b/content/base/test/csp/test_hash_source.html
index 46cfe7e45237..709ec761fe88 100644
--- a/content/base/test/csp/test_hash_source.html
+++ b/content/base/test/csp/test_hash_source.html
@@ -126,8 +126,7 @@ function checkInline () {
 SimpleTest.waitForExplicitFinish();
 
 SpecialPowers.pushPrefEnv(
-  {'set':[["security.csp.speccompliant", true],
-          ["security.csp.experimentalEnabled", true]]},
+  {'set':[["security.csp.speccompliant", true]]},
   function() {
     // save this for last so that our listeners are registered.
     // ... this loads the testbed of good and bad requests.
diff --git a/content/base/test/csp/test_nonce_source.html b/content/base/test/csp/test_nonce_source.html
index 5360ea6859e9..892c4ee72909 100644
--- a/content/base/test/csp/test_nonce_source.html
+++ b/content/base/test/csp/test_nonce_source.html
@@ -113,8 +113,7 @@ window.examiner = new examiner();
 SimpleTest.waitForExplicitFinish();
 
 SpecialPowers.pushPrefEnv(
-  {'set':[["security.csp.speccompliant", true],
-          ["security.csp.experimentalEnabled", true]]},
+  {'set':[["security.csp.speccompliant", true]]},
   function() {
     // save this for last so that our listeners are registered.
     // ... this loads the testbed of good and bad requests.