diff --git a/netwerk/protocol/about/src/nsAboutBloat.cpp b/netwerk/protocol/about/src/nsAboutBloat.cpp
index 1f1caf37a43b..32e830b1ca67 100644
--- a/netwerk/protocol/about/src/nsAboutBloat.cpp
+++ b/netwerk/protocol/about/src/nsAboutBloat.cpp
@@ -108,7 +108,6 @@ nsAboutBloat::NewChannel(const char *verb,
             dumpFileName += "all-";
         else
             dumpFileName += "new-";
-        PRTime now = PR_Now();
         PRExplodedTime expTime;
         PR_ExplodeTime(PR_Now(), PR_LocalTimeParameters, &expTime);
         char time[128];
diff --git a/rdf/util/src/nsRDFResource.cpp b/rdf/util/src/nsRDFResource.cpp
index 3c523e7d8175..5a01e5326419 100644
--- a/rdf/util/src/nsRDFResource.cpp
+++ b/rdf/util/src/nsRDFResource.cpp
@@ -40,8 +40,6 @@ nsRDFResource::nsRDFResource(void)
 
 nsRDFResource::~nsRDFResource(void)
 {
-    nsresult rv = NS_OK;
-    
     gRDFService->UnregisterResource(this);
 
     // N.B. that we need to free the URI *after* we un-cache the resource,