diff --git a/tools/qfcc/include/struct.h b/tools/qfcc/include/struct.h
index 4438ec600..54cf1b045 100644
--- a/tools/qfcc/include/struct.h
+++ b/tools/qfcc/include/struct.h
@@ -46,7 +46,8 @@ typedef struct {
 struct symbol_s *find_struct (int su, struct symbol_s *tag,
 							  struct type_s *type);
 struct symbol_s *build_struct (int su, struct symbol_s *tag,
-							   struct symtab_s *symtab, struct type_s *type);
+							   struct symtab_s *symtab, struct type_s *type,
+							   int base);
 struct symbol_s *find_enum (struct symbol_s *tag);
 struct symtab_s *start_enum (struct symbol_s *enm);
 struct symbol_s *finish_enum (struct symbol_s *sym);
diff --git a/tools/qfcc/source/qc-parse.y b/tools/qfcc/source/qc-parse.y
index 5355a7981..1bab1798b 100644
--- a/tools/qfcc/source/qc-parse.y
+++ b/tools/qfcc/source/qc-parse.y
@@ -846,7 +846,7 @@ struct_specifier
 			current_symtab = symtab->parent;
 
 			if ($1) {
-				sym = build_struct ($1, $2, symtab, 0);
+				sym = build_struct ($1, $2, symtab, 0, 0);
 				$$ = make_spec (sym->type, 0, 0, 0);
 				if (!sym->table)
 					symtab_addsymbol (current_symtab, sym);
@@ -2051,7 +2051,11 @@ ivar_decl_list
 			tab->parent = 0;
 
 			tab = $$->parent;	// preserve the ivars inheritance chain
-			build_struct ('s', 0, $$, 0);
+			int         base = 0;
+			if ($<class>0->super_class) {
+				base = type_size ($<class>0->super_class->type);
+			}
+			build_struct ('s', 0, $$, 0, base);
 			$$->parent = tab;
 			current_visibility = vis_public;
 		}
diff --git a/tools/qfcc/source/struct.c b/tools/qfcc/source/struct.c
index 318efb420..db5b05352 100644
--- a/tools/qfcc/source/struct.c
+++ b/tools/qfcc/source/struct.c
@@ -110,7 +110,7 @@ find_struct (int su, symbol_t *tag, type_t *type)
 }
 
 symbol_t *
-build_struct (int su, symbol_t *tag, symtab_t *symtab, type_t *type)
+build_struct (int su, symbol_t *tag, symtab_t *symtab, type_t *type, int base)
 {
 	symbol_t   *sym = find_struct (su, tag, type);
 	symbol_t   *s;
@@ -131,7 +131,7 @@ build_struct (int su, symbol_t *tag, symtab_t *symtab, type_t *type)
 				   s->type->t.class->name);
 		}
 		if (su == 's') {
-			symtab->size = RUP (symtab->size, s->type->alignment);
+			symtab->size = RUP (symtab->size + base, s->type->alignment) - base;
 			s->s.offset = symtab->size;
 			symtab->size += type_size (s->type);
 		} else {
@@ -304,7 +304,7 @@ make_structure (const char *name, int su, struct_def_t *defs, type_t *type)
 			internal_error (0, "duplicate symbol: %s", defs->name);
 		defs++;
 	}
-	sym = build_struct (su, sym, strct, type);
+	sym = build_struct (su, sym, strct, type, 0);
 	return sym;
 }