diff --git a/examples_cuda/common.mk b/examples_cuda/common.mk
index 518eec69..c11f22dc 100644
--- a/examples_cuda/common.mk
+++ b/examples_cuda/common.mk
@@ -10,7 +10,7 @@ CCFLAGS+=-Iobjs/ -O2
 
 LIBS=-lm $(TASK_LIB) -lstdc++
 ISPC=ispc
-ISPC_FLAGS+=-O2 --opt=fast-math --math-lib=fast
+ISPC_FLAGS+=-O2 --opt=fast-math --math-lib=default
 ISPC_HEADER=objs/$(ISPC_SRC:.ispc=_ispc.h)
 
 ARCH:=$(shell uname -m | sed -e s/x86_64/x86/ -e s/i686/x86/ -e s/arm.*/arm/ -e s/sa110/arm/)