diff --git a/vlib/v/gen/c/array.v b/vlib/v/gen/c/array.v
index ca70328188..494e737294 100644
--- a/vlib/v/gen/c/array.v
+++ b/vlib/v/gen/c/array.v
@@ -382,7 +382,7 @@ fn (mut g Gen) gen_array_sort(node ast.CallExpr) {
 	// `users.sort(a.age > b.age)`
 	// Generate a comparison function for a custom type
 	elem_stype := g.typ(info.elem_type)
-	mut compare_fn := 'compare_${elem_stype.replace('*', '_ptr')}'
+	mut compare_fn := 'compare_${g.unique_file_path_hash}_${elem_stype.replace('*', '_ptr')}'
 	mut comparison_type := g.unwrap(ast.void_type)
 	mut left_expr, mut right_expr := '', ''
 	// the only argument can only be an infix expression like `a < b` or `b.field > a.field`
@@ -443,7 +443,7 @@ fn (mut g Gen) gen_array_sort(node ast.CallExpr) {
 	}
 
 	stype_arg := g.typ(info.elem_type)
-	g.definitions.writeln('int ${compare_fn}($stype_arg* a, $stype_arg* b) {')
+	g.definitions.writeln('VV_LOCAL_SYMBOL int ${compare_fn}($stype_arg* a, $stype_arg* b) {')
 	c_condition := if comparison_type.sym.has_method('<') {
 		'${g.typ(comparison_type.typ)}__lt($left_expr, $right_expr)'
 	} else if comparison_type.unaliased_sym.has_method('<') {
diff --git a/vlib/v/gen/c/cgen.v b/vlib/v/gen/c/cgen.v
index 00b704a68e..9abbb39919 100644
--- a/vlib/v/gen/c/cgen.v
+++ b/vlib/v/gen/c/cgen.v
@@ -5,6 +5,7 @@ module c
 
 import os
 import strings
+import hash.fnv1a
 import v.ast
 import v.pref
 import v.token
@@ -72,6 +73,7 @@ mut:
 	json_forward_decls     strings.Builder // json type forward decls
 	sql_buf                strings.Builder // for writing exprs to args via `sqlite3_bind_int()` etc
 	file                   &ast.File
+	unique_file_path_hash  u64 // a hash of file.path, used for making auxilary fn generation unique (like `compare_xyz`)
 	fn_decl                &ast.FnDecl // pointer to the FnDecl we are currently inside otherwise 0
 	last_fn_c_name         string
 	tmp_count              int  // counter for unique tmp vars (_tmp1, _tmp2 etc); resets at the start of each fn.
@@ -579,7 +581,7 @@ pub fn (mut g Gen) free_builders() {
 
 pub fn (mut g Gen) gen_file() {
 	g.timers.start('cgen_file $g.file.path')
-
+	g.unique_file_path_hash = fnv1a.sum64_string(g.file.path)
 	if g.pref.is_vlines {
 		g.vlines_path = util.vlines_escape_path(g.file.path, g.pref.ccompiler)
 		g.is_vlines_enabled = true