diff --git a/extras/Introjucer/Source/Project/jucer_AudioPluginModule.h b/extras/Introjucer/Source/Project/jucer_AudioPluginModule.h
index c6d3038acb..a497222aad 100644
--- a/extras/Introjucer/Source/Project/jucer_AudioPluginModule.h
+++ b/extras/Introjucer/Source/Project/jucer_AudioPluginModule.h
@@ -281,7 +281,7 @@ namespace VSTHelpers
                     config->getValue (Ids::useRuntimeLibDLL) = true;
 
                 if (config->getValue (Ids::postbuildCommand).toString().isEmpty())
-                    config->getValue (Ids::postbuildCommand) = "copy /Y $(OutDir)$(TargetFileName) $(OutDir)$(TargetName).vst3";
+                    config->getValue (Ids::postbuildCommand) = "copy /Y \"$(OutDir)$(TargetFileName)\" \"$(OutDir)$(TargetName).vst3\"";
             }
         }
     }
diff --git a/extras/audio plugin demo/Builds/VisualStudio2005/JuceDemoPlugin.vcproj b/extras/audio plugin demo/Builds/VisualStudio2005/JuceDemoPlugin.vcproj
index 38345d2423..125cba4f5c 100644
--- a/extras/audio plugin demo/Builds/VisualStudio2005/JuceDemoPlugin.vcproj	
+++ b/extras/audio plugin demo/Builds/VisualStudio2005/JuceDemoPlugin.vcproj	
@@ -66,7 +66,7 @@
       <Tool Name="VCAppVerifierTool"/>
       <Tool Name="VCPostBuildEventTool"
             Description="Post-build"
-            CommandLine="copy /Y $(OutDir)$(TargetFileName) $(OutDir)$(TargetName).vst3"/>
+            CommandLine="copy /Y &quot;$(OutDir)$(TargetFileName)&quot; &quot;$(OutDir)$(TargetName).vst3&quot;"/>
     </Configuration>
     <Configuration Name="Release|Win32"
                    OutputDirectory=".\Release"
@@ -127,7 +127,7 @@
       <Tool Name="VCAppVerifierTool"/>
       <Tool Name="VCPostBuildEventTool"
             Description="Post-build"
-            CommandLine="copy /Y $(OutDir)$(TargetFileName) $(OutDir)$(TargetName).vst3"/>
+            CommandLine="copy /Y &quot;$(OutDir)$(TargetFileName)&quot; &quot;$(OutDir)$(TargetName).vst3&quot;"/>
     </Configuration>
   </Configurations>
   <References/>
diff --git a/extras/audio plugin demo/Builds/VisualStudio2008/JuceDemoPlugin.vcproj b/extras/audio plugin demo/Builds/VisualStudio2008/JuceDemoPlugin.vcproj
index 568171bdc7..d36d8f495d 100644
--- a/extras/audio plugin demo/Builds/VisualStudio2008/JuceDemoPlugin.vcproj	
+++ b/extras/audio plugin demo/Builds/VisualStudio2008/JuceDemoPlugin.vcproj	
@@ -66,7 +66,7 @@
       <Tool Name="VCAppVerifierTool"/>
       <Tool Name="VCPostBuildEventTool"
             Description="Post-build"
-            CommandLine="copy /Y $(OutDir)$(TargetFileName) $(OutDir)$(TargetName).vst3"/>
+            CommandLine="copy /Y &quot;$(OutDir)$(TargetFileName)&quot; &quot;$(OutDir)$(TargetName).vst3&quot;"/>
     </Configuration>
     <Configuration Name="Release|Win32"
                    OutputDirectory=".\Release"
@@ -127,7 +127,7 @@
       <Tool Name="VCAppVerifierTool"/>
       <Tool Name="VCPostBuildEventTool"
             Description="Post-build"
-            CommandLine="copy /Y $(OutDir)$(TargetFileName) $(OutDir)$(TargetName).vst3"/>
+            CommandLine="copy /Y &quot;$(OutDir)$(TargetFileName)&quot; &quot;$(OutDir)$(TargetName).vst3&quot;"/>
     </Configuration>
   </Configurations>
   <References/>
diff --git a/modules/juce_audio_plugin_client/VST3/juce_VST3_Wrapper.cpp b/modules/juce_audio_plugin_client/VST3/juce_VST3_Wrapper.cpp
index 5f162591ce..b09bfc6ced 100644
--- a/modules/juce_audio_plugin_client/VST3/juce_VST3_Wrapper.cpp
+++ b/modules/juce_audio_plugin_client/VST3/juce_VST3_Wrapper.cpp
@@ -1460,7 +1460,7 @@ private:
 
 #ifndef JucePlugin_Vst3Category
    #if JucePlugin_IsSynth
-    #define JucePlugin_Vst3Category Vst::PlugType::kInstrument
+    #define JucePlugin_Vst3Category Vst::PlugType::kInstrumentSynth
    #else
     #define JucePlugin_Vst3Category Vst::PlugType::kFx
    #endif