diff --git a/arch/um/Makefile-skas b/arch/um/Makefile-skas
index 67323b028999..1a27e65bcb9c 100644
--- a/arch/um/Makefile-skas
+++ b/arch/um/Makefile-skas
@@ -3,15 +3,15 @@
 # Licensed under the GPL
 #
 
-GPROF_OPT += -pg
+export UM_GPROF_OPT += -pg
 
 ifdef CONFIG_CC_IS_CLANG
-GCOV_OPT += -fprofile-instr-generate -fcoverage-mapping
+export UM_GCOV_OPT += -fprofile-instr-generate -fcoverage-mapping
 else
-GCOV_OPT += -fprofile-arcs -ftest-coverage
+export UM_GCOV_OPT += -fprofile-arcs -ftest-coverage
 endif
 
-CFLAGS-$(CONFIG_GCOV) += $(GCOV_OPT)
-CFLAGS-$(CONFIG_GPROF) += $(GPROF_OPT)
-LINK-$(CONFIG_GCOV) += $(GCOV_OPT)
-LINK-$(CONFIG_GPROF) += $(GPROF_OPT)
+CFLAGS-$(CONFIG_GCOV) += $(UM_GCOV_OPT)
+CFLAGS-$(CONFIG_GPROF) += $(UM_GPROF_OPT)
+LINK-$(CONFIG_GCOV) += $(UM_GCOV_OPT)
+LINK-$(CONFIG_GPROF) += $(UM_GPROF_OPT)
diff --git a/arch/um/kernel/skas/Makefile b/arch/um/kernel/skas/Makefile
index f6a219074772..3384be42691f 100644
--- a/arch/um/kernel/skas/Makefile
+++ b/arch/um/kernel/skas/Makefile
@@ -24,7 +24,7 @@ $(obj)/stub_exe: $(obj)/stub_exe.dbg FORCE
 
 quiet_cmd_stub_exe = STUB_EXE $@
       cmd_stub_exe = $(CC) -nostdlib -o $@ \
-			   $(KBUILD_CFLAGS) $(STUB_EXE_LDFLAGS) \
+			   $(filter-out $(UM_GPROF_OPT) $(UM_GCOV_OPT),$(KBUILD_CFLAGS)) $(STUB_EXE_LDFLAGS) \
 			   $(filter %.o,$^)
 
 STUB_EXE_LDFLAGS = -Wl,-n -static