diff --git a/src/interpreter.c b/src/interpreter.c
index 030fb4a709912..70beff9ba0b18 100644
--- a/src/interpreter.c
+++ b/src/interpreter.c
@@ -134,7 +134,7 @@ static void eval_abstracttype(jl_expr_t *ex, interpreter_state *s)
     jl_datatype_t *dt = NULL;
     jl_value_t *w = NULL;
     jl_module_t *modu = s->module;
-    JL_GC_PUSH4(&para, &super, &temp, &w);
+    JL_GC_PUSH5(&para, &super, &temp, &w, &dt);
     assert(jl_is_svec(para));
     if (jl_is_globalref(name)) {
         modu = jl_globalref_mod(name);
@@ -397,7 +397,9 @@ SECT_INTERP static jl_value_t *eval_value(jl_value_t *e, interpreter_state *s)
     if (jl_is_pinode(e)) {
         jl_value_t *val = eval_value(jl_fieldref_noalloc(e, 0), s);
 #ifndef JL_NDEBUG
+        JL_GC_PUSH1(&val);
         jl_typeassert(val, jl_fieldref_noalloc(e, 1));
+        JL_GC_POP();
 #endif
         return val;
     }