diff --git a/extras/audio plugins/wrapper/RTAS/juce_RTAS_WinUtilities.cpp b/extras/audio plugins/wrapper/RTAS/juce_RTAS_WinUtilities.cpp
index f3212cf31d..24f639d143 100644
--- a/extras/audio plugins/wrapper/RTAS/juce_RTAS_WinUtilities.cpp	
+++ b/extras/audio plugins/wrapper/RTAS/juce_RTAS_WinUtilities.cpp	
@@ -51,7 +51,7 @@ void JUCE_CALLTYPE attachSubWindow (void* hostWindow,
     GetClientRect ((HWND) hostWindow, &clientRect);
 
     titleW = clientRect.right - clientRect.left;
-    titleH = jmax (0, (clientRect.bottom - clientRect.top) - comp->getHeight());
+    titleH = jmax (0, (int) (clientRect.bottom - clientRect.top) - comp->getHeight());
     comp->setTopLeftPosition (0, titleH);
 
     comp->addToDesktop (0);
diff --git a/extras/audio plugins/wrapper/VST/juce_VST_Wrapper.cpp b/extras/audio plugins/wrapper/VST/juce_VST_Wrapper.cpp
index 97c1fea108..807e6826ab 100644
--- a/extras/audio plugins/wrapper/VST/juce_VST_Wrapper.cpp	
+++ b/extras/audio plugins/wrapper/VST/juce_VST_Wrapper.cpp	
@@ -1087,7 +1087,7 @@ public:
         // hope so) we'll give it a while and then free it in the timer callback.
         chunkMemoryTime = JUCE_NAMESPACE::Time::getApproximateMillisecondCounter();
 
-        return chunkMemory.getSize();
+        return (VstInt32) chunkMemory.getSize();
     }
 
     VstInt32 setChunk (void* data, VstInt32 byteSize, bool onlyRestoreCurrentProgramData)
diff --git a/extras/browser plugins/wrapper/juce_NPAPI_GlueCode.cpp b/extras/browser plugins/wrapper/juce_NPAPI_GlueCode.cpp
index 8453e7ae53..e19a93c7e4 100644
--- a/extras/browser plugins/wrapper/juce_NPAPI_GlueCode.cpp	
+++ b/extras/browser plugins/wrapper/juce_NPAPI_GlueCode.cpp	
@@ -174,7 +174,7 @@ NPError OSCALL NP_Initialize (NPNetscapeFuncs* funcs
         return NPERR_INCOMPATIBLE_VERSION_ERROR;
 
     zerostruct (browser);
-    memcpy (&browser, funcs, jmin (funcs->size, sizeof (browser)));
+    memcpy (&browser, funcs, jmin ((size_t) funcs->size, sizeof (browser)));
 
 #ifdef XP_UNIX
     pluginFuncs->version            = (NP_VERSION_MAJOR << 8) + NP_VERSION_MINOR;