diff --git a/test-data/blank-disks/Makefile.am b/test-data/blank-disks/Makefile.am
index b22f7c92b..19e4dd30d 100644
--- a/test-data/blank-disks/Makefile.am
+++ b/test-data/blank-disks/Makefile.am
@@ -32,19 +32,19 @@ CLEANFILES += $(files)
 
 # Blank disk images in various sizes and formats.
 blank-disk-1s.raw:
-	guestfish disk-create $@ raw 512
+	$(top_builddir)/run guestfish disk-create $@ raw 512
 
 blank-disk-1s.qcow2:
 	qemu-img create -f qcow2 -o preallocation=metadata $@ 512
 
 blank-disk-1K.raw:
-	guestfish disk-create $@ raw 1K
+	$(top_builddir)/run guestfish disk-create $@ raw 1K
 
 blank-disk-1K.qcow2:
 	qemu-img create -f qcow2 -o preallocation=metadata $@ 1K
 
 blank-disk-1M.raw:
-	guestfish disk-create $@ raw 1M
+	$(top_builddir)/run guestfish disk-create $@ raw 1M
 
 blank-disk-1M.qcow2:
 	qemu-img create -f qcow2 -o preallocation=metadata $@ 1M