diff --git a/poky/scripts/runqemu-extract-sdk b/poky/scripts/runqemu-extract-sdk
index 8a4ee90..9bc0c07 100755
--- a/poky/scripts/runqemu-extract-sdk
+++ b/poky/scripts/runqemu-extract-sdk
@@ -69,7 +69,7 @@
 pseudo_state_dir="$SDK_ROOTFS_DIR/../$(basename "$SDK_ROOTFS_DIR").pseudo_state"
 pseudo_state_dir="$(readlink -f $pseudo_state_dir)"
 
-debug_image="`echo $ROOTFS_TARBALL | grep '\-dbg\.tar\.'`"
+debug_image="`echo $ROOTFS_TARBALL | grep '\-dbg\.rootfs\.tar'`"
 
 if [ -e "$pseudo_state_dir" -a -z "$debug_image" ]; then
 	echo "Error: $pseudo_state_dir already exists!"