diff --git a/README.md b/README.md
index c419af14..86bde00a 100644
--- a/README.md
+++ b/README.md
@@ -93,6 +93,8 @@ To compile a debug version, replace `-O2` with `-ggdb`.
 
 Depending on your environment, replace `-std=gnu99` with `-std=c99`.
 
+For gcc 10 and higher add -fcommon options to CFLAGS.
+
 Systemwide installation is optional. You may run `sgminer` from the build
 directory directly, or `make install` if you wish to install
 `sgminer` to a system location or a location you specified with `--prefix`.