diff --git a/gen-wcwidth.py b/gen-wcwidth.py
index 8d640eedb..73ef3d194 100755
--- a/gen-wcwidth.py
+++ b/gen-wcwidth.py
@@ -504,7 +504,7 @@ def gen_wcwidth() -> None:
         p('\t\t// }}}\n')
 
     with create_header('kitty/wcwidth-std.h') as p:
-        p('static int\nwcwidth_std(int32_t code) {')
+        p('static inline int\nwcwidth_std(int32_t code) {')
         p('\tif (LIKELY(0x20 <= code && code <= 0x7e)) return 1;')
         p('\tswitch(code) {')
 
diff --git a/kitty/wcwidth-std.h b/kitty/wcwidth-std.h
index 6a8a74e7d..6c179cee6 100644
--- a/kitty/wcwidth-std.h
+++ b/kitty/wcwidth-std.h
@@ -5,7 +5,7 @@
 
 START_ALLOW_CASE_RANGE
 
-static int
+static inline int
 wcwidth_std(int32_t code) {
 	if (LIKELY(0x20 <= code && code <= 0x7e)) return 1;
 	switch(code) {