diff --git a/.github/workflows/Build.yml b/.github/workflows/Build.yml
index 26bb6bc..4be625f 100644
--- a/.github/workflows/Build.yml
+++ b/.github/workflows/Build.yml
@@ -65,7 +65,7 @@ jobs:
     # artifact ...... path to compiled application; use "NO" if given job run should not generate any artifacts (case sensitive)
     # artifact-os ... defines artifact name suffix
     #
-    - { name: Linux GCC,      os: ubuntu-22.04, cc: gcc,   cxx: g++,     ver: null, arch: 32, generator: "Unix Makefiles",        can-fail: false, artifact: Build/fallout2-ce,             artifact-os: linux }
+    - { name: Linux GCC,      os: ubuntu-20.04, cc: gcc,   cxx: g++,     ver: null, arch: 32, generator: "Unix Makefiles",        can-fail: false, artifact: Build/fallout2-ce,             artifact-os: linux }
     # { name: Linux GCC,      os: ubuntu-22.04, cc: gcc,   cxx: g++,     ver: null, arch: 64, generator: "Unix Makefiles",        can-fail: true,  artifact: Build/fallout2-ce,             artifact-os: linux }
     - { name: Linux GCC 10,   os: ubuntu-22.04, cc: gcc,   cxx: g++,     ver: 10,   arch: 32, generator: "Unix Makefiles",        can-fail: false, artifact: NO,                            artifact-os: linux }
     # { name: Linux GCC 10,   os: ubuntu-22.04, cc: gcc,   cxx: g++,     ver: 10,   arch: 64, generator: "Unix Makefiles",        can-fail: true,  artifact: NO,                            artifact-os: linux }
diff --git a/src/core.cc b/src/core.cc
index 61a86be..3e2131d 100644
--- a/src/core.cc
+++ b/src/core.cc
@@ -4278,9 +4278,11 @@ void _kb_init_lock_status()
         gModifierKeysState |= MODIFIER_KEY_STATE_NUM_LOCK;
     }
 
+#if SDL_VERSION_ATLEAST(2, 0, 18)
     if ((SDL_GetModState() & KMOD_SCROLL) != 0) {
         gModifierKeysState |= MODIFIER_KEY_STATE_SCROLL_LOCK;
     }
+#endif
 }
 
 // Get pointer to pending key event from the queue but do not consume it.