diff --git a/vlib/v/gen/cgen.v b/vlib/v/gen/cgen.v
index 3a4476c73c..d82394ec46 100644
--- a/vlib/v/gen/cgen.v
+++ b/vlib/v/gen/cgen.v
@@ -306,6 +306,12 @@ pub fn (mut g Gen) init() {
 		g.cheaders.writeln(g.pref.custom_prelude)
 	} else if !g.pref.no_preludes {
 		g.cheaders.writeln('// Generated by the V compiler')
+		g.cheaders.writeln('
+#if defined(__TINYC__) && defined(__has_include)
+// tcc does not support has_include properly yet, turn it off completely
+#undef __has_include
+#endif
+')
 		g.cheaders.writeln(get_guarded_include_text('<inttypes.h>', 'The C compiler can not find <inttypes.h> . Please install build-essentials')) // int64_t etc
 		g.cheaders.writeln(c_builtin_types)
 		if g.pref.is_bare {