diff --git a/INSTALL.md b/INSTALL.md
index 1091a3f8..41fe7628 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -136,7 +136,7 @@ a `zypper` command that should install all of them. If something is
 still found to be missing, please open an issue.
 
 ```sh
-zypper install cmake freetype-devel fontconfig-devel libxcb-devel libxkbcommon-devel
+zypper install cmake freetype-devel fontconfig-devel libxcb-devel libxkbcommon-devel gcc-c++
 ```
 
 #### Slackware