diff --git a/nc_warnings.cmake b/nc_warnings.cmake
index f4fdfc4..a9d6dd7 100644
--- a/nc_warnings.cmake
+++ b/nc_warnings.cmake
@@ -34,12 +34,15 @@ append_compile_flag(-Wsign-promo)
 append_compile_flag(-Wstrict-aliasing)
 append_compile_flag(-Wstrict-overflow)
 append_compile_flag(-Wtype-limits)
-append_compile_flag(-Wunsafe-loop-optimizations)
 append_compile_flag(-Wunused-but-set-variable)
 append_compile_flag(-Wunused-parameter)
 append_compile_flag(-Wpessimizing-move)
 append_compile_flag(-Wswitch-enum)
 
+# dont use unsafe-loop-optimisations as there are too many false positives
+# with language primitives like range-for.
+# append_compile_flag(-Wunsafe-loop-optimizations)
+
 # gcc-6.1.0 warnings
 append_compile_flag(-Wshift-negative-value)
 append_compile_flag(-Wnull-dereference)