diff --git a/content/base/src/nsContentSink.cpp b/content/base/src/nsContentSink.cpp
index 9e286c87db62..d2815453ae6c 100644
--- a/content/base/src/nsContentSink.cpp
+++ b/content/base/src/nsContentSink.cpp
@@ -1257,10 +1257,9 @@ nsContentSink::IsTimeToNotify()
   }
 
   PRTime now = PR_Now();
-  int64_t interval, diff;
 
-  LL_I2L(interval, GetNotificationInterval());
-  diff = now - mLastNotificationTime;
+  int64_t interval = GetNotificationInterval();
+  int64_t diff = now - mLastNotificationTime;
 
   if (diff > interval) {
     mBackoffCount--;
diff --git a/rdf/base/src/rdfutil.cpp b/rdf/base/src/rdfutil.cpp
index 982174ccc0a5..b4af38f77253 100644
--- a/rdf/base/src/rdfutil.cpp
+++ b/rdf/base/src/rdfutil.cpp
@@ -104,9 +104,7 @@ rdf_ParseDate(const nsACString &aTime)
             usec += *digit - '0';
         }
 
-        PRTime temp;
-        LL_I2L(temp, usec);
-        t += temp;
+        t += usec;
     }
 
     return t;
diff --git a/rdf/datasource/src/nsFileSystemDataSource.cpp b/rdf/datasource/src/nsFileSystemDataSource.cpp
index 4eebb875ba0a..d6893a4ebc42 100644
--- a/rdf/datasource/src/nsFileSystemDataSource.cpp
+++ b/rdf/datasource/src/nsFileSystemDataSource.cpp
@@ -1109,11 +1109,7 @@ FileSystemDataSource::GetLastMod(nsIRDFResource *source, nsIRDFDate **aResult)
         return(rv);
 
     // convert from milliseconds to seconds
-    PRTime      temp64, thousand;
-    LL_I2L(thousand, PR_MSEC_PER_SEC);
-    temp64 = lastModDate * thousand;
-
-    mRDFService->GetDateLiteral(temp64, aResult);
+    mRDFService->GetDateLiteral(lastModDate * PR_MSEC_PER_SEC, aResult);
 
     return(NS_OK);
 }