diff --git a/core/src/main/java/com/google/errorprone/bugpatterns/UnusedVariable.java b/core/src/main/java/com/google/errorprone/bugpatterns/UnusedVariable.java
index dca3245af04..43f0421e2aa 100644
--- a/core/src/main/java/com/google/errorprone/bugpatterns/UnusedVariable.java
+++ b/core/src/main/java/com/google/errorprone/bugpatterns/UnusedVariable.java
@@ -704,6 +704,11 @@ && exemptedFieldBySuperType(getType(variableTree), state)) {
       if (wellKnownKeep.shouldKeep(variableTree)) {
         return;
       }
+      // Skip variables that don't have an explicit source position
+      // (e.g., Lombok-generated fields like @Slf4j's log field).
+      if (!hasExplicitSource(variableTree, state)) {
+        return;
+      }
       switch (symbol.getKind()) {
         case FIELD -> {
           // We are only interested in private fields and those which are not special.