diff --git a/ext/ddtrace_profiling_native_extension/collectors_stack.c b/ext/ddtrace_profiling_native_extension/collectors_stack.c
index 404a4cabcb6..9bc0d11e0cb 100644
--- a/ext/ddtrace_profiling_native_extension/collectors_stack.c
+++ b/ext/ddtrace_profiling_native_extension/collectors_stack.c
@@ -115,13 +115,12 @@ static VALUE _native_sample(
   ddog_prof_Slice_Label slice_labels = {.ptr = labels, .len = labels_count};
 
   if (in_gc == Qtrue) {
-    ddog_CharSlice gc_placeholder = DDOG_CHARSLICE_C("Garbage Collection");
     record_placeholder_stack(
       buffer,
       recorder_instance,
       values,
       (sample_labels) {.labels = slice_labels, .state_label = state_label},
-      (ddog_prof_Function) {.name = DDOG_CHARSLICE_C(""), .filename = gc_placeholder}
+      DDOG_CHARSLICE_C("Garbage Collection")
     );
   } else {
     sample_thread(
@@ -327,13 +326,12 @@ static void record_placeholder_stack_in_native_code(
   sample_values values,
   sample_labels labels
 ) {
-  ddog_CharSlice in_native_code_placeholder = DDOG_CHARSLICE_C("In native code");
   record_placeholder_stack(
     buffer,
     recorder_instance,
     values,
     labels,
-    (ddog_prof_Function) {.name = DDOG_CHARSLICE_C(""), .filename = in_native_code_placeholder}
+    DDOG_CHARSLICE_C("In native code")
   );
 }
 
@@ -342,9 +340,10 @@ void record_placeholder_stack(
   VALUE recorder_instance,
   sample_values values,
   sample_labels labels,
-  ddog_prof_Function placeholder_stack
+  ddog_CharSlice placeholder_stack
 ) {
-  buffer->locations[0] = (ddog_prof_Location) {.function = placeholder_stack, .line = 0};
+  ddog_prof_Function placeholder = {.name = DDOG_CHARSLICE_C(""), .filename = placeholder_stack};
+  buffer->locations[0] = (ddog_prof_Location) {.function = placeholder, .line = 0};
 
   record_sample(
     recorder_instance,
diff --git a/ext/ddtrace_profiling_native_extension/collectors_stack.h b/ext/ddtrace_profiling_native_extension/collectors_stack.h
index 3c9ae15db91..b026bbbdeb8 100644
--- a/ext/ddtrace_profiling_native_extension/collectors_stack.h
+++ b/ext/ddtrace_profiling_native_extension/collectors_stack.h
@@ -18,7 +18,7 @@ void record_placeholder_stack(
   VALUE recorder_instance,
   sample_values values,
   sample_labels labels,
-  ddog_prof_Function placeholder_stack
+  ddog_CharSlice placeholder_stack
 );
 sampling_buffer *sampling_buffer_new(unsigned int max_frames);
 void sampling_buffer_free(sampling_buffer *buffer);
diff --git a/ext/ddtrace_profiling_native_extension/collectors_thread_context.c b/ext/ddtrace_profiling_native_extension/collectors_thread_context.c
index 7360982d47b..a86ce1dba9d 100644
--- a/ext/ddtrace_profiling_native_extension/collectors_thread_context.c
+++ b/ext/ddtrace_profiling_native_extension/collectors_thread_context.c
@@ -639,7 +639,6 @@ VALUE thread_context_collector_sample_after_gc(VALUE self_instance) {
     end_timestamp_ns = monotonic_to_system_epoch_ns(&state->time_converter_state, state->gc_tracking.wall_time_at_previous_gc_ns);
   }
 
-  ddog_CharSlice gc_placeholder = DDOG_CHARSLICE_C("Garbage Collection");
   record_placeholder_stack(
     state->sampling_buffer,
     state->recorder_instance,
@@ -655,7 +654,7 @@ VALUE thread_context_collector_sample_after_gc(VALUE self_instance) {
       .timeline_wall_time_ns = state->gc_tracking.accumulated_wall_time_ns,
     },
     (sample_labels) {.labels = slice_labels, .state_label = NULL, .end_timestamp_ns = end_timestamp_ns},
-    (ddog_prof_Function) {.name = DDOG_CHARSLICE_C(""), .filename = gc_placeholder}
+    DDOG_CHARSLICE_C("Garbage Collection")
   );
 
   state->gc_tracking.wall_time_at_last_flushed_gc_event_ns = state->gc_tracking.wall_time_at_previous_gc_ns;