2 files changed, 13 insertions, 3 deletions
diff --git a/iseq.c b/iseq.c
index e2e9b4d6e7..440270bd29 100644
--- a/iseq.c
+++ b/iseq.c
@@ -1002,8 +1002,15 @@ pm_iseq_new_with_opt(pm_scope_node_t *node, VALUE name, VALUE path, VALUE realpa
         .end_pos = { .lineno = (int) end.line, .column = (int) end.column }
     };
 
+    rb_compile_option_t *current_option = (rb_compile_option_t *) option;
+    if (node->parser->frozen_string_literal) {
+        rb_compile_option_t new_option = *option;
+        new_option.frozen_string_literal = true;
+        current_option = &new_option;
+    }
+
     prepare_iseq_build(iseq, name, path, realpath, first_lineno, &code_location, -1,
-                       parent, isolated_depth, type, Qnil, option);
+                       parent, isolated_depth, type, Qnil, current_option);
 
     pm_iseq_compile_node(iseq, node);
     finish_iseq_build(iseq);
diff --git a/prism_compile.c b/prism_compile.c
index c529c4d88c..2e1666524f 100644
--- a/prism_compile.c
+++ b/prism_compile.c
@@ -773,12 +773,13 @@ pm_interpolated_node_compile(pm_node_list_t *parts, rb_iseq_t *iseq, NODE dummy_
                     current_string = rb_enc_str_new(NULL, 0, enc);
                 }
 
-                if (parser->frozen_string_literal) {
+                if (ISEQ_COMPILE_DATA(iseq)->option->frozen_string_literal) {
                     ADD_INSN1(ret, &dummy_line_node, putobject, rb_str_freeze(current_string));
                 }
                 else {
                     ADD_INSN1(ret, &dummy_line_node, putstring, rb_str_freeze(current_string));
                 }
+
                 current_string = Qnil;
                 number_of_items_pushed++;
 
@@ -793,12 +794,14 @@ pm_interpolated_node_compile(pm_node_list_t *parts, rb_iseq_t *iseq, NODE dummy_
 
         if (RTEST(current_string)) {
             current_string = rb_fstring(current_string);
-            if (parser->frozen_string_literal) {
+
+            if (ISEQ_COMPILE_DATA(iseq)->option->frozen_string_literal) {
                 ADD_INSN1(ret, &dummy_line_node, putobject, current_string);
             }
             else {
                 ADD_INSN1(ret, &dummy_line_node, putstring, current_string);
             }
+
             current_string = Qnil;
             number_of_items_pushed++;
         }