diff --git a/src/textures/skyboxtexture.cpp b/src/textures/skyboxtexture.cpp
index 6b5346ac28..45e79bf74d 100644
--- a/src/textures/skyboxtexture.cpp
+++ b/src/textures/skyboxtexture.cpp
@@ -38,6 +38,7 @@ FSkyBox::FSkyBox(const char *name)
 : FTexture(name)
 {
 	FTextureID texid = TexMan.CheckForTexture(name, ETextureType::Wall);
+	previous = nullptr;
 	if (texid.isValid())
 	{
 		previous = TexMan.GetTexture(texid);
diff --git a/src/v_font.cpp b/src/v_font.cpp
index aaf4507252..da33352365 100644
--- a/src/v_font.cpp
+++ b/src/v_font.cpp
@@ -149,7 +149,7 @@ public:
 	FSinglePicFont(const char *picname);
 
 	// FFont interface
-	FTexture *GetChar (int code, int *const width) const;
+	FTexture *GetChar(int code, int translation, int *const width, bool *redirected = nullptr) const override;
 	int GetCharWidth (int code) const;
 
 protected:
@@ -1465,9 +1465,10 @@ FSinglePicFont::FSinglePicFont(const char *picname) :
 //
 //==========================================================================
 
-FTexture *FSinglePicFont::GetChar (int code, int *const width) const
+FTexture *FSinglePicFont::GetChar (int code, int translation, int *const width, bool *redirected) const
 {
 	*width = SpaceWidth;
+	if (redirected) *redirected = false;
 	if (code == 'a' || code == 'A')
 	{
 		return TexMan.GetPalettedTexture(PicNum, true);
diff --git a/src/v_font.h b/src/v_font.h
index 96283947ad..7e83735320 100644
--- a/src/v_font.h
+++ b/src/v_font.h
@@ -82,7 +82,7 @@ public:
 	FFont (const char *fontname, const char *nametemplate, int first, int count, int base, int fdlump, int spacewidth=-1, bool notranslate = false);
 	virtual ~FFont ();
 
-	FTexture *GetChar (int code, int translation, int *const width, bool *redirected = nullptr) const;
+	virtual FTexture *GetChar (int code, int translation, int *const width, bool *redirected = nullptr) const;
 	virtual int GetCharWidth (int code) const;
 	FRemapTable *GetColorTranslation (EColorRange range, PalEntry *color = nullptr) const;
 	int GetLump() const { return Lump; }