diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index d78b5d38beaa..636119dc4403 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -407,8 +407,12 @@ cmd_dtc = $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ;
 		-d $(depfile).dtc.tmp $(dtc-tmp) ; \
 	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 
+# NOTE:
+# Do not replace $(filter %.dtb %.dtbo, $^) with $(real-prereqs). When a single
+# DTB is turned into a multi-blob DTB, $^ will contain header file dependencies
+# recorded in the .*.cmd file.
 quiet_cmd_fdtoverlay = DTOVL   $@
-      cmd_fdtoverlay = $(objtree)/scripts/dtc/fdtoverlay -o $@ -i $(real-prereqs)
+      cmd_fdtoverlay = $(objtree)/scripts/dtc/fdtoverlay -o $@ -i $(filter %.dtb %.dtbo, $^)
 
 $(multi-dtb-y): FORCE
 	$(call if_changed,fdtoverlay)