diff --git a/spec/runtime/helpers/spy_reader.cc b/spec/runtime/helpers/spy_reader.cc
index 194be372..927f3ac2 100644
--- a/spec/runtime/helpers/spy_reader.cc
+++ b/spec/runtime/helpers/spy_reader.cc
@@ -8,7 +8,7 @@ static const char * spy_read(void *data, size_t *bytes_read) {
     size_t size = std::min(reader->chunk_size,
                            reader->content.length() - reader->position);
     const char *result = reader->content.data() + reader->position;
-    reader->chunks_read.push_back(string(result, size));
+    reader->strings_read.back() += string(result, size);
     reader->position += size;
     *bytes_read = size;
     return result;
@@ -16,6 +16,7 @@ static const char * spy_read(void *data, size_t *bytes_read) {
 
 static int spy_seek(void *data, size_t position) {
     SpyReader *reader = static_cast<SpyReader *>(data);
+    reader->strings_read.push_back("");
     reader->position = position;
     return 0;
 }
diff --git a/spec/runtime/helpers/spy_reader.h b/spec/runtime/helpers/spy_reader.h
index 457d5898..1ad90d39 100644
--- a/spec/runtime/helpers/spy_reader.h
+++ b/spec/runtime/helpers/spy_reader.h
@@ -13,7 +13,7 @@ public:
     size_t position;
     size_t chunk_size;
     ts_input input;
-    std::vector<std::string> chunks_read;
+    std::vector<std::string> strings_read;
 };
 
 #endif  // HELPERS_SPY_READER_H_
diff --git a/spec/runtime/parser_spec.cc b/spec/runtime/parser_spec.cc
index 2ede7b60..33c0e340 100644
--- a/spec/runtime/parser_spec.cc
+++ b/spec/runtime/parser_spec.cc
@@ -33,12 +33,8 @@ describe("parsing", [&]() {
     });
 
     it("reads the entire input", [&]() {
-        AssertThat(reader->chunks_read, Equals(vector<string>({
-            "{ \"ke",
-            "y\": [",
-            "1, 2]",
-            " }",
-            ""
+        AssertThat(reader->strings_read, Equals(vector<string>({
+            "{ \"key\": [1, 2] }"
         })));
     });