diff --git a/src/cprof_encode_text.c b/src/cprof_encode_text.c
index ba718a9..299af8a 100644
--- a/src/cprof_encode_text.c
+++ b/src/cprof_encode_text.c
@@ -2256,6 +2256,10 @@ int cprof_encode_text_create(cfl_sds_t *result_buffer,
         return CPROF_ENCODE_TEXT_ALLOCATION_ERROR;
     }
 
+    memset(context.indentation_buffer,
+           0,
+           cfl_sds_alloc(context.indentation_buffer));
+
     context.indentation_level_size = 4;
     context.indentation_character = ' ';