diff --git a/res/ael/ael.flex b/res/ael/ael.flex
index 0674ba8ff1..4d441fb73b 100644
--- a/res/ael/ael.flex
+++ b/res/ael/ael.flex
@@ -887,7 +887,7 @@ static void setup_filestack(char *fnamebuf2, int fnamebuf_siz, glob_t *globbuf,
 			   	free(include_stack[include_stack_index].fname);
 				include_stack[include_stack_index].fname = 0;
 			}
-			include_stack[include_stack_index].fname = strdup(my_file);
+			include_stack[include_stack_index].fname = strdup(S_OR(my_file, "<none>"));
 			include_stack[include_stack_index].lineno = my_lineno;
 			include_stack[include_stack_index].colno = my_col+yyleng;
 			if (my_file)
diff --git a/res/ael/ael.tab.c b/res/ael/ael.tab.c
index cbe9d8c337..4d44d44f3a 100644
--- a/res/ael/ael.tab.c
+++ b/res/ael/ael.tab.c
@@ -3470,7 +3470,7 @@ struct pval *npval(pvaltype type, int first_line, int last_line,
 	z->endline = last_line;
 	z->startcol = first_column;
 	z->endcol = last_column;
-	z->filename = strdup(my_file);
+	z->filename = strdup(S_OR(my_file, "<none>"));
 	return z;
 }
 
diff --git a/res/ael/ael.y b/res/ael/ael.y
index c8bc9c78eb..27e04c5834 100644
--- a/res/ael/ael.y
+++ b/res/ael/ael.y
@@ -854,7 +854,7 @@ struct pval *npval(pvaltype type, int first_line, int last_line,
 	z->endline = last_line;
 	z->startcol = first_column;
 	z->endcol = last_column;
-	z->filename = strdup(my_file);
+	z->filename = strdup(S_OR(my_file, "<none>"));
 	return z;
 }
 
diff --git a/res/ael/ael_lex.c b/res/ael/ael_lex.c
index 6517644bde..02d8f82e49 100644
--- a/res/ael/ael_lex.c
+++ b/res/ael/ael_lex.c
@@ -3444,7 +3444,7 @@ static void setup_filestack(char *fnamebuf2, int fnamebuf_siz, glob_t *globbuf,
 			   	free(include_stack[include_stack_index].fname);
 				include_stack[include_stack_index].fname = 0;
 			}
-			include_stack[include_stack_index].fname = strdup(my_file);
+			include_stack[include_stack_index].fname = strdup(S_OR(my_file, "<none>"));
 			include_stack[include_stack_index].lineno = my_lineno;
 			include_stack[include_stack_index].colno = my_col+yyleng;
 			if (my_file)