diff --git a/doc/utils/sphinx-config/false_positives.txt b/doc/utils/sphinx-config/false_positives.txt
index 944f8409da..dfff998cf5 100644
--- a/doc/utils/sphinx-config/false_positives.txt
+++ b/doc/utils/sphinx-config/false_positives.txt
@@ -3015,6 +3015,7 @@ Setmask
 setpoint
 setvel
 sfftw
+sfree
 Sg
 Shan
 Shanno
@@ -3174,6 +3175,7 @@ Streiz
 strerror
 strided
 strietz
+stringstreams
 strmatch
 strncmp
 strstr