diff --git a/src/ld65/expr.c b/src/ld65/expr.c
index bc3d7941c..e106e09d0 100644
--- a/src/ld65/expr.c
+++ b/src/ld65/expr.c
@@ -464,6 +464,12 @@ static void GetSegExprValInternal (ExprNode* Expr, SegExprDesc* D, int Sign)
 {
     Export* E;
 
+    if (Expr == 0)
+    {
+        D->TooComplex = 1;
+        return;
+    }
+
     switch (Expr->Op) {
 
         case EXPR_LITERAL: