diff --git a/src/ir.cpp b/src/ir.cpp
index d50229925cc4d9e5ce31fe8f266d097963c92553..7bca551852d8bf6b622745735fe97e98251d4446 100644
--- a/src/ir.cpp
+++ b/src/ir.cpp
@@ -8128,7 +8128,6 @@ static ZigType *get_error_set_union(CodeGen *g, ErrorTableEntry **errors, ZigTyp
         }
     }
     assert(index == count);
-    assert(count != 0);
 
     if (type_name == nullptr) {
         buf_appendf(&err_set_type->name, "}");
diff --git a/test/stage1/behavior/error.zig b/test/stage1/behavior/error.zig
index 8ee1b3090782a77b255c4746db00de2bb144c963..9b7904e9cf6c7d5e87cde5f74d5a480c8fd0f79c 100644
--- a/test/stage1/behavior/error.zig
+++ b/test/stage1/behavior/error.zig
@@ -160,6 +160,10 @@ fn testErrToIntWithOnePossibleValue(
     }
 }
 
+test "empty error union" {
+    const x = error{} || error{};
+}
+
 test "error union peer type resolution" {
     testErrorUnionPeerTypeResolution(1);
 }