diff --git a/intern/cycles/kernel/SConscript b/intern/cycles/kernel/SConscript
index 04e1bad7538..ef28f7b6d91 100644
--- a/intern/cycles/kernel/SConscript
+++ b/intern/cycles/kernel/SConscript
@@ -74,7 +74,7 @@ if env['WITH_BF_CYCLES_CUDA_BINARIES']:
 
     # nvcc flags
     nvcc_flags = "-m%s" % (bits)
-    nvcc_flags += " --cubin --ptxas-options=\"-v\""
+    nvcc_flags += " --cubin --ptxas-options=\"-v\" --use_fast_math"
     nvcc_flags += " -D__KERNEL_CUDA_VERSION__=%d" % (cuda_version)
     nvcc_flags += " -DCCL_NAMESPACE_BEGIN= -DCCL_NAMESPACE_END= -DNVCC"
     nvcc_flags += " -I \"%s\" -I \"%s\" -I \"%s\" -I \"%s\"" % (util_dir, svm_dir, geom_dir, closure_dir)