diff --git a/vlib/sokol/f/f_d_use_freetype.v b/vlib/fontstash/a_d_use_freetype.v
similarity index 96%
rename from vlib/sokol/f/f_d_use_freetype.v
rename to vlib/fontstash/a_d_use_freetype.v
index 38ff462e7d..849e287ebb 100644
--- a/vlib/sokol/f/f_d_use_freetype.v
+++ b/vlib/fontstash/a_d_use_freetype.v
@@ -1,4 +1,4 @@
-module f
+module fontstash
 
 #define FONS_USE_FREETYPE
 
diff --git a/vlib/v/ast/ast.v b/vlib/v/ast/ast.v
index 041a94e258..e3e8025d45 100644
--- a/vlib/v/ast/ast.v
+++ b/vlib/v/ast/ast.v
@@ -765,8 +765,9 @@ pub mut:
 // #include etc
 pub struct HashStmt {
 pub:
-	mod string
-	pos token.Position
+	mod         string
+	pos         token.Position
+	source_file string
 pub mut:
 	val  string // example: 'include <openssl/rand.h> # please install openssl // comment'
 	kind string // : 'include'
diff --git a/vlib/v/gen/cgen.v b/vlib/v/gen/cgen.v
index a8eced4227..ddd26a36c8 100644
--- a/vlib/v/gen/cgen.v
+++ b/vlib/v/gen/cgen.v
@@ -1165,7 +1165,7 @@ fn (mut g Gen) stmt(node ast.Stmt) {
 					g.includes.writeln(guarded_include)
 				}
 			} else if node.kind == 'define' {
-				g.includes.writeln('// defined by module `$node.mod`:')
+				g.includes.writeln('// defined by module `$node.mod` in file `$node.source_file`:')
 				g.includes.writeln('#define $node.main')
 			}
 		}
diff --git a/vlib/v/parser/comptime.v b/vlib/v/parser/comptime.v
index c05a902b44..86557f8d61 100644
--- a/vlib/v/parser/comptime.v
+++ b/vlib/v/parser/comptime.v
@@ -33,6 +33,7 @@ fn (mut p Parser) hash() ast.HashStmt {
 	// p.trace('a.v', 'kind: ${kind:-10s} | pos: ${pos:-45s} | hash: $val')
 	return ast.HashStmt{
 		mod: p.mod
+		source_file: p.file_name
 		val: val
 		kind: kind
 		main: main_str