diff --git a/vlib/v/gen/c/cgen.v b/vlib/v/gen/c/cgen.v
index 393cfc2b5a..e43207d49e 100644
--- a/vlib/v/gen/c/cgen.v
+++ b/vlib/v/gen/c/cgen.v
@@ -15,9 +15,11 @@ import v.depgraph
 // NB: keywords after 'new' are reserved in C++
 const (
 	c_reserved = ['delete', 'exit', 'link', 'unix', 'error', 'calloc', 'malloc', 'free', 'panic',
-		'auto', 'char', 'default', 'do', 'double', 'extern', 'float', 'inline', 'int', 'long',
-		'register', 'restrict', 'short', 'signed', 'sizeof', 'static', 'switch', 'typedef', 'union',
-		'unsigned', 'void', 'volatile', 'while', 'new', 'namespace', 'class', 'typename', 'export']
+		'case', 'auto', 'char', 'default', 'do', 'double', 'extern', 'float', 'inline', 'int',
+		'long', 'register', 'restrict', 'short', 'signed', 'sizeof', 'static', 'switch', 'typedef',
+		'union', 'unsigned', 'void', 'volatile', 'while', 'new', 'namespace', 'class', 'typename',
+		'export',
+	]
 	// same order as in token.Kind
 	cmp_str    = ['eq', 'ne', 'gt', 'lt', 'ge', 'le']
 	// when operands are switched