diff --git a/Makefile b/Makefile
index 49fd57ff2..1bb3f6b90 100644
--- a/Makefile
+++ b/Makefile
@@ -32,7 +32,7 @@ export NOFORTRAN
 export NO_LAPACK
 endif
 
-LAPACK_NOOPT := $(filter-out -O0 -O1 -O2 -O3 -Ofast,$(LAPACK_FFLAGS))
+LAPACK_NOOPT := $(filter-out -O0 -O1 -O2 -O3 -Ofast -O -Og -Os,$(LAPACK_FFLAGS))
 
 SUBDIRS_ALL = $(SUBDIRS) test ctest utest exports benchmark ../laswp ../bench cpp_thread_test