diff --git a/test/Makefile b/test/Makefile
index 327dc55..54ddc7e 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -60,7 +60,6 @@ endif
 
 # Compiler options here.
 ifeq ($(USE_OPT),)
-# -O2 is needed for mingw, without it there is a linking issue to isnanf?!?!
   #USE_OPT = $(RFLAGS) -O2 -fgnu89-inline -ggdb -fomit-frame-pointer -falign-functions=16 -std=gnu99 -Werror-implicit-function-declaration -Werror -Wno-error=pointer-sign -Wno-error=unused-function -Wno-error=unused-variable -Wno-error=sign-compare -Wno-error=unused-parameter -Wno-error=missing-field-initializers
   USE_OPT = -c -Wall -O0 -ggdb -g
   USE_OPT += -Werror=missing-field-initializers