diff --git a/.github/workflows/core-build.yml b/.github/workflows/core-build.yml
index ce3e176..e1c0568 100644
--- a/.github/workflows/core-build.yml
+++ b/.github/workflows/core-build.yml
@@ -8,8 +8,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        compiler: [clang6, clang9, clang10]
-    runs-on: ubuntu-20.04
+        compiler: [clang]
+    runs-on: ubuntu-latest
     name: ${{ matrix.compiler }}
     env:
       COMPILER: ${{ matrix.compiler }}
diff --git a/src/mod_learnspells.cpp b/src/mod_learnspells.cpp
index 5de4c8a..5da8d7d 100644
--- a/src/mod_learnspells.cpp
+++ b/src/mod_learnspells.cpp
@@ -271,7 +271,7 @@ private:
             auto spellsForPlayersFamily = spellsMap.find(playerSpellFamily);
             if (spellsForPlayersFamily != spellsMap.end())
             {
-                vector<AddSpell> additionalSpellsToTeach = spellsForPlayersFamily->second;
+                std::vector<AddSpell> additionalSpellsToTeach = spellsForPlayersFamily->second;
                 for (auto const& spell : additionalSpellsToTeach)
                 {
                     if (!(player->HasSpell(spell.spellId)) && (spell.faction == TeamId::TEAM_NEUTRAL || spell.faction == player->GetTeamId()))