diff --git a/m4/virt-storage-rbd.m4 b/m4/virt-storage-rbd.m4
index 727bd715e1dd916c1c8fdc2a2c1009949c74f0df..17e2115309d401d50ebac011334f42dea5fe456a 100644
--- a/m4/virt-storage-rbd.m4
+++ b/m4/virt-storage-rbd.m4
@@ -36,7 +36,7 @@ AC_DEFUN([LIBVIRT_STORAGE_CHECK_RBD], [
       LIBS="$old_LIBS"
     fi
 
-    if test "$LIBRDB_FOUND" = "yes"; then
+    if test "$LIBRBD_FOUND" = "yes"; then
       with_storage_rbd=yes
       AC_DEFINE_UNQUOTED([WITH_STORAGE_RBD], [1],
                          [whether RBD backend for storage driver is enabled])