diff --git a/ipc/chromium/src/base/logging.cc b/ipc/chromium/src/base/logging.cc
index 2b8d180bddf2..8b0f9d843c3f 100644
--- a/ipc/chromium/src/base/logging.cc
+++ b/ipc/chromium/src/base/logging.cc
@@ -12,37 +12,37 @@ namespace mozilla {
 
 Logger::~Logger()
 {
-  PRLogModuleLevel prlevel = PR_LOG_DEBUG;
+  LogLevel prlevel = LogLevel::Debug;
   int xpcomlevel = -1;
 
   switch (mSeverity) {
   case LOG_INFO:
-    prlevel = PR_LOG_DEBUG;
+    prlevel = LogLevel::Debug;
     xpcomlevel = -1;
     break;
 
   case LOG_WARNING:
-    prlevel = PR_LOG_WARNING;
+    prlevel = LogLevel::Warning;
     xpcomlevel = NS_DEBUG_WARNING;
     break;
 
   case LOG_ERROR:
-    prlevel = PR_LOG_ERROR;
+    prlevel = LogLevel::Error;
     xpcomlevel = NS_DEBUG_WARNING;
     break;
 
   case LOG_ERROR_REPORT:
-    prlevel = PR_LOG_ERROR;
+    prlevel = LogLevel::Error;
     xpcomlevel = NS_DEBUG_ASSERTION;
     break;
 
   case LOG_FATAL:
-    prlevel = PR_LOG_ERROR;
+    prlevel = LogLevel::Error;
     xpcomlevel = NS_DEBUG_ABORT;
     break;
   }
 
-  PR_LOG(GetLog(), prlevel, ("%s:%i: %s", mFile, mLine, mMsg ? mMsg : "<no message>"));
+  MOZ_LOG(GetLog(), prlevel, ("%s:%i: %s", mFile, mLine, mMsg ? mMsg : "<no message>"));
   if (xpcomlevel != -1)
     NS_DebugBreak(xpcomlevel, mMsg, NULL, mFile, mLine);
 
diff --git a/netwerk/cache2/CacheEntry.cpp b/netwerk/cache2/CacheEntry.cpp
index 37f42799ec85..61792af39581 100644
--- a/netwerk/cache2/CacheEntry.cpp
+++ b/netwerk/cache2/CacheEntry.cpp
@@ -199,8 +199,6 @@ CacheEntry::~CacheEntry()
   MOZ_COUNT_DTOR(CacheEntry);
 }
 
-#ifdef PR_LOG
-
 char const * CacheEntry::StateString(uint32_t aState)
 {
   switch (aState) {
@@ -215,8 +213,6 @@ char const * CacheEntry::StateString(uint32_t aState)
   return "?";
 }
 
-#endif
-
 nsresult CacheEntry::HashingKeyWithStorage(nsACString &aResult) const
 {
   return HashingKey(mStorageID, mEnhanceID, mURI, aResult);
diff --git a/netwerk/cache2/CacheEntry.h b/netwerk/cache2/CacheEntry.h
index 98a0f5bbd92c..03e1f35288fa 100644
--- a/netwerk/cache2/CacheEntry.h
+++ b/netwerk/cache2/CacheEntry.h
@@ -294,9 +294,7 @@ private:
   //        fails to open an output stream.
   bool mHasData : 1;
 
-#ifdef PR_LOG
   static char const * StateString(uint32_t aState);
-#endif
 
   enum EState {      // transiting to:
     NOTLOADED = 0,   // -> LOADING | EMPTY
diff --git a/xpcom/glue/Logging.h b/xpcom/glue/Logging.h
index 0e9c35f9bcca..55b60668a083 100644
--- a/xpcom/glue/Logging.h
+++ b/xpcom/glue/Logging.h
@@ -63,5 +63,8 @@ inline bool log_test(const PRLogModuleInfo* module, LogLevel level) {
     }                     \
   PR_END_MACRO
 
+#undef PR_LOG
+#undef PR_LOG_TEST
+
 #endif // mozilla_logging_h