diff --git a/src/Prefs.cpp b/src/Prefs.cpp
index a26448b65..8b8b6554b 100755
--- a/src/Prefs.cpp
+++ b/src/Prefs.cpp
@@ -326,3 +326,8 @@ bool EnumSetting::WriteInt( int code ) // you flush gPrefs afterward
       return false;
    return Write( mSymbols[index].Internal() );
 }
+
+wxString WarningDialogKey(const wxString &internalDialogName)
+{
+   return wxT("/Warnings/") + internalDialogName;
+}
diff --git a/src/Prefs.h b/src/Prefs.h
index e94d4446b..88b7651cc 100644
--- a/src/Prefs.h
+++ b/src/Prefs.h
@@ -191,4 +191,9 @@ private:
    std::unique_ptr<Impl> mpImpl;
 };
 
+/// Return the config file key associated with a warning dialog identified
+/// by internalDialogName.  When the box is checked, the value at the key
+/// becomes false.
+wxString WarningDialogKey(const wxString &internalDialogName);
+
 #endif
diff --git a/src/prefs/RecordingPrefs.cpp b/src/prefs/RecordingPrefs.cpp
index cb1d91465..ca6a70155 100644
--- a/src/prefs/RecordingPrefs.cpp
+++ b/src/prefs/RecordingPrefs.cpp
@@ -31,8 +31,6 @@
 #include "../Prefs.h"
 #include "../ShuttleGui.h"
 
-#include "../widgets/Warning.h"
-
 using std::min;
 
 enum {
diff --git a/src/widgets/Warning.cpp b/src/widgets/Warning.cpp
index 65c987a66..3e74ec832 100644
--- a/src/widgets/Warning.cpp
+++ b/src/widgets/Warning.cpp
@@ -109,8 +109,3 @@ int ShowWarningDialog(wxWindow *parent,
    gPrefs->Flush();
    return wxID_OK;
 }
-
-wxString WarningDialogKey(const wxString &internalDialogName)
-{
-   return wxT("/Warnings/") + internalDialogName;
-}
diff --git a/src/widgets/Warning.h b/src/widgets/Warning.h
index 60e4de6cd..2a3730938 100644
--- a/src/widgets/Warning.h
+++ b/src/widgets/Warning.h
@@ -30,9 +30,4 @@ int ShowWarningDialog(wxWindow *parent,
                       // This message appears by the checkbox:
                       const wxString &footer = DefaultWarningFooter());
 
-/// Return the config file key associated with a warning dialog identified
-/// by internalDialogName.  When the box is checked, the value at the key
-/// becomes false.
-wxString WarningDialogKey(const wxString &internalDialogName);
-
 #endif // __AUDACITY_WARNING__