diff --git a/src/analyze.cpp b/src/analyze.cpp
index 65e3022bca2ed8138aba6f83209179db87461644..c62fb9cec65b5e5f194a57237918e4bfd79435ad 100644
--- a/src/analyze.cpp
+++ b/src/analyze.cpp
@@ -1166,9 +1166,12 @@ static bool is_op_allowed(TypeTableEntry *type, BinOpType op) {
         case BinOpTypeAssignTimes:
         case BinOpTypeAssignDiv:
         case BinOpTypeAssignMod:
-        case BinOpTypeAssignPlus:
-        case BinOpTypeAssignMinus:
             return type->id == TypeTableEntryIdInt || type->id == TypeTableEntryIdFloat;
+        case BinOpTypeAssignPlus:
+        case BinOpTypeAssignMinus:
+            return type->id == TypeTableEntryIdInt ||
+                   type->id == TypeTableEntryIdFloat ||
+                   type->id == TypeTableEntryIdPointer;
         case BinOpTypeAssignBitShiftLeft:
         case BinOpTypeAssignBitShiftRight:
         case BinOpTypeAssignBitAnd: