1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 5259633..bd9b847 100644
--- a/Makefile
+++ b/Makefile
@@ -9,7 +9,7 @@ OPTIONS =
 
 OPTIMISE = -Os
 CPPFLAGS = $(foreach D, $(OPTIONS), -D'$(D)=1')
-CFLAGS = -std=c90 -Wall -Wextra -fPIC
+CFLAGS = -std=c99 -Wall -Wextra -fPIC
 LDFLAGS = -shared
 
 CC_FLAGS = $(CPPFLAGS) $(CFLAGS) $(OPTIMISE)