diff --git a/content/post/build-code.md b/content/post/build-code.md
index b38e5a0c..a32a23bc 100644
--- a/content/post/build-code.md
+++ b/content/post/build-code.md
@@ -120,6 +120,14 @@ You need to clone it, run autoconf/automake, configure and build using GNU make.
 Now clone the forked repo:
 {{% common-build-commands section="clone-online" %}}
 
+**Compiler note (openSUSE):**  
+GCC/G++ 12 or newer is required for building Collabora Online on openSUSE.
+If your default compiler is older, run configure like this:
+
+```bash
+CC="ccache gcc-12" CXX="ccache g++-12" ./configure
+```
+
 {{% common-build-commands section="build-online" %}}
 
 {{% common-build-commands section="run-unit-tests" %}}