diff --git a/compiler/api/compiler.py b/compiler/api/compiler.py
index 4f83cf0a..cc8be2d7 100644
--- a/compiler/api/compiler.py
+++ b/compiler/api/compiler.py
@@ -34,7 +34,7 @@ SECTION_RE = re.compile(r"---(\w+)---")
 LAYER_RE = re.compile(r"//\sLAYER\s(\d+)")
 COMBINATOR_RE = re.compile(r"^([\w.]+)#([0-9a-f]+)\s(?:.*)=\s([\w<>.]+);$", re.MULTILINE)
 ARGS_RE = re.compile(r"[^{](\w+):([\w?!.<>#]+)")
-FLAGS_RE = re.compile(r"flags(\d?).(\d+)\?")
+FLAGS_RE = re.compile(r"flags(\d?)\.(\d+)\?")
 FLAGS_RE_2 = re.compile(r"flags(\d?)\.(\d+)\?([\w<>.]+)")
 FLAGS_RE_3 = re.compile(r"flags(\d?):#")
 INT_RE = re.compile(r"int(\d+)")