diff --git a/build/linux/platform_specific_code/juce_linux_Files.cpp b/build/linux/platform_specific_code/juce_linux_Files.cpp
index 4816c44229..4981dd1a30 100644
--- a/build/linux/platform_specific_code/juce_linux_Files.cpp
+++ b/build/linux/platform_specific_code/juce_linux_Files.cpp
@@ -198,6 +198,12 @@ bool File::isOnHardDisk() const throw()
     return true;
 }
 
+bool File::isOnRemovableDrive() const throw()
+{
+    jassertfalse // xxx not implemented for linux!
+    return false;
+}
+
 bool File::isHidden() const throw()
 {
     return getFileName().startsWithChar (T('.'));
diff --git a/build/macosx/platform_specific_code/juce_mac_Files.cpp b/build/macosx/platform_specific_code/juce_mac_Files.cpp
index af58abd41e..468d8787f4 100644
--- a/build/macosx/platform_specific_code/juce_mac_Files.cpp
+++ b/build/macosx/platform_specific_code/juce_mac_Files.cpp
@@ -426,6 +426,12 @@ bool File::isOnHardDisk() const throw()
     return ! (isOnCDRomDrive() || isFileOnDriveType (this, (const char**) nonHDTypes));
 }
 
+bool File::isOnRemovableDrive() const throw()
+{
+    jassertfalse // xxx not implemented for mac!
+    return false;
+}
+
 static bool juce_isHiddenFile (const String& path) throw()
 {
     FSRef ref;
diff --git a/juce_amalgamated.cpp b/juce_amalgamated.cpp
index 9c1bdeebbe..a6af6fdbe3 100644
--- a/juce_amalgamated.cpp
+++ b/juce_amalgamated.cpp
@@ -244318,6 +244318,12 @@ bool File::isOnHardDisk() const throw()
     return true;
 }
 
+bool File::isOnRemovableDrive() const throw()
+{
+    jassertfalse // xxx not implemented for linux!
+    return false;
+}
+
 bool File::isHidden() const throw()
 {
     return getFileName().startsWithChar (T('.'));
@@ -252245,6 +252251,12 @@ bool File::isOnHardDisk() const throw()
     return ! (isOnCDRomDrive() || isFileOnDriveType (this, (const char**) nonHDTypes));
 }
 
+bool File::isOnRemovableDrive() const throw()
+{
+    jassertfalse // xxx not implemented for mac!
+    return false;
+}
+
 static bool juce_isHiddenFile (const String& path) throw()
 {
     FSRef ref;