diff --git a/extras/Introjucer/Source/Application/jucer_AppearanceSettings.cpp b/extras/Introjucer/Source/Application/jucer_AppearanceSettings.cpp
index 960b4d21ff..17925201f9 100644
--- a/extras/Introjucer/Source/Application/jucer_AppearanceSettings.cpp
+++ b/extras/Introjucer/Source/Application/jucer_AppearanceSettings.cpp
@@ -729,8 +729,8 @@ void IntrojucerLookAndFeel::drawButtonBackground (Graphics& g,
     const bool flatOnTop    = button.isConnectedOnTop();
     const bool flatOnBottom = button.isConnectedOnBottom();
 
-    const float width  = button.getWidth();
-    const float height = button.getHeight();
+    const float width  = (float) button.getWidth();
+    const float height = (float) button.getHeight();
 
     const float x = 0.5f;
     const float y = 0.5f;
diff --git a/extras/Introjucer/Source/Code Editor/jucer_SourceCodeEditor.h b/extras/Introjucer/Source/Code Editor/jucer_SourceCodeEditor.h
index 63c3b583fd..016cb569ea 100644
--- a/extras/Introjucer/Source/Code Editor/jucer_SourceCodeEditor.h	
+++ b/extras/Introjucer/Source/Code Editor/jucer_SourceCodeEditor.h	
@@ -101,13 +101,24 @@ public:
                 return true;
 
             MemoryBlock mb;
-            if (file.loadFileAsData (mb)
-                 && CharPointer_UTF8::isValidString (static_cast <const char*> (mb.getData()), mb.getSize()))
+            if (file.loadFileAsData (mb) && seemsToBeText (static_cast <const char*> (mb.getData()), (int) mb.getSize()))
                 return true;
 
             return false;
         }
 
+        static bool seemsToBeText (const char* const chars, const int num) noexcept
+        {
+            for (int i = 0; i < num; ++i)
+            {
+                const char c = chars[i];
+                if ((c < 32 && c != '\t' && c != '\r' && c != '\n') || chars[i] > 126)
+                    return false;
+            }
+
+            return true;
+        }
+
         Document* openFile (Project* project, const File& file) { return new SourceCodeDocument (project, file); }
     };