diff --git a/backends/platform/psp/Makefile b/backends/platform/psp/Makefile
index 8be3937ff24..9d9f8634449 100644
--- a/backends/platform/psp/Makefile
+++ b/backends/platform/psp/Makefile
@@ -90,6 +90,7 @@ OBJS := powerman.o \
 	trace.o
 
 DEPDIR = .deps
+CXX_UPDATE_DEP_FLAG = "-Wp,-MMD,"$(*D)/$(DEPDIR)/$(*F).d",-MQ,"$@",-MP"
 
 include $(srcdir)/Makefile.common