diff --git a/security/manager/boot/src/nsSecureBrowserUIImpl.cpp b/security/manager/boot/src/nsSecureBrowserUIImpl.cpp
index 2790c3fd6be1..0e84ba1c76ff 100644
--- a/security/manager/boot/src/nsSecureBrowserUIImpl.cpp
+++ b/security/manager/boot/src/nsSecureBrowserUIImpl.cpp
@@ -1275,7 +1275,7 @@ nsSecureBrowserUIImpl::OnSecurityChange(nsIWebProgress *aWebProgress,
 NS_IMETHODIMP
 nsSecureBrowserUIImpl::GetSSLStatus(nsISupports** _result)
 {
-  NS_ASSERTION(_result, "non-NULL destination required");
+  NS_ENSURE_ARG_POINTER(_result);
 
   *_result = mSSLStatus;
   NS_IF_ADDREF(*_result);
diff --git a/security/manager/ssl/src/nsNSSIOLayer.cpp b/security/manager/ssl/src/nsNSSIOLayer.cpp
index e0f113eb55bc..985a0b98ba96 100644
--- a/security/manager/ssl/src/nsNSSIOLayer.cpp
+++ b/security/manager/ssl/src/nsNSSIOLayer.cpp
@@ -432,7 +432,7 @@ nsresult nsNSSSocketInfo::SetFileDescPtr(PRFileDesc* aFilePtr)
 
 nsresult nsNSSSocketInfo::GetSSLStatus(nsISupports** _result)
 {
-  NS_ASSERTION(_result, "non-NULL destination required");
+  NS_ENSURE_ARG_POINTER(_result);
 
   *_result = mSSLStatus;
   NS_IF_ADDREF(*_result);