diff --git a/doc/build.py b/doc/build.py
index d5a5a484..32eb03dd 100755
--- a/doc/build.py
+++ b/doc/build.py
@@ -40,6 +40,7 @@ def build_docs():
       GENERATE_RTF      = NO
       CASE_SENSE_NAMES  = NO
       INPUT             = {0}/format.h
+      EXCLUDE_SYMBOLS   = fmt::internal::*
       QUIET             = YES
       JAVADOC_AUTOBRIEF = YES
       AUTOLINK_SUPPORT  = NO