diff --git a/tools/build-freetype.sh b/tools/build-freetype.sh
index f8886de..09c9a43 100755
--- a/tools/build-freetype.sh
+++ b/tools/build-freetype.sh
@@ -4,6 +4,9 @@
 
 if [ ! -f $CACHEROOT/freetype-$FT_VERSION.tar.bz2 ]; then
 	try curl -L http://download.savannah.gnu.org/releases/freetype/freetype-$FT_VERSION.tar.bz2 > $CACHEROOT/freetype-$FT_VERSION.tar.bz2
+fi
+if [ ! -d $TMPROOT/freetype-$FT_VERSION ]; then
+	try rm -rf $TMPROOT/freetype-$FT_VERSION
 	try tar xjf $CACHEROOT/freetype-$FT_VERSION.tar.bz2
 	try mv freetype-$FT_VERSION $TMPROOT
 fi
diff --git a/tools/build-sdlttf.sh b/tools/build-sdlttf.sh
index fceb679..c089cd1 100755
--- a/tools/build-sdlttf.sh
+++ b/tools/build-sdlttf.sh
@@ -4,6 +4,9 @@
 
 if [ ! -f $CACHEROOT/SDL_ttf-$SDLTTF_VERSION.tar.gz ]; then
 	try curl -L http://www.libsdl.org/projects/SDL_ttf/release/SDL_ttf-$SDLTTF_VERSION.tar.gz > $CACHEROOT/SDL_ttf-$SDLTTF_VERSION.tar.gz
+fi
+if [ ! -d $TMPROOT/SDL_ttf-$SDLTTF_VERSION ]; then
+	try rm -rf $TMPROOT/SDL_ttf-$SDLTTF_VERSION
 	try tar xzf $CACHEROOT/SDL_ttf-$SDLTTF_VERSION.tar.gz
 	try mv SDL_ttf-$SDLTTF_VERSION $TMPROOT
 fi