diff --git a/iseq.c b/iseq.c
index b68c230404..fa5f564fb3 100644
--- a/iseq.c
+++ b/iseq.c
@@ -1447,7 +1447,19 @@ iseqw_s_compile_prism(int argc, VALUE *argv, VALUE self)
     pm_options_line_set(&options, start_line);
 
     pm_parser_t parser;
-    pm_parser_init(&parser, (const uint8_t *) RSTRING_PTR(src), RSTRING_LEN(src), &options);
+
+    if (RB_TYPE_P(src, T_FILE)) {
+        FilePathValue(src);
+        file = rb_fstring(src); /* rb_io_t->pathv gets frozen anyways */
+
+        pm_string_t input;
+        pm_string_mapped_init(&input, RSTRING_PTR(file));
+
+        pm_parser_init(&parser, pm_string_source(&input), pm_string_length(&input), &options);
+    }
+    else {
+        pm_parser_init(&parser, (const uint8_t *) RSTRING_PTR(src), RSTRING_LEN(src), &options);
+    }
 
     rb_iseq_t *iseq = iseq_alloc();
     iseqw_s_compile_prism_compile(&parser, opt, iseq, file, path, start_line);
diff --git a/test/ruby/test_iseq.rb b/test/ruby/test_iseq.rb
index f05d067ac2..b0896511d8 100644
--- a/test/ruby/test_iseq.rb
+++ b/test/ruby/test_iseq.rb
@@ -798,4 +798,15 @@ class TestISeq < Test::Unit::TestCase
     result = RubyVM::InstructionSequence.load_from_binary(iseq.to_binary).eval
     assert_equal expected, result, proc {sprintf("expected: %x, result: %x", expected, result)}
   end
+
+  def test_compile_prism_with_file
+    Tempfile.create(%w"test_iseq .rb") do |f|
+      f.puts "name = 'Prism'; puts 'hello"
+      f.close
+
+      assert_nothing_raised(SyntaxError) {
+        RubyVM::InstructionSequence.compile_prism(f.path)
+      }
+    end
+  end
 end