diff --git a/src/Sema.zig b/src/Sema.zig
index 09268824c6dd2063f6a94d836416a36375c11e42..ba5ad7eb1566c69ee5377a8269d3ac512e073d31 100644
--- a/src/Sema.zig
+++ b/src/Sema.zig
@@ -3182,10 +3182,12 @@ fn ensureResultUsed(
     const zcu = pt.zcu;
     switch (ty.zigTypeTag(zcu)) {
         .void, .noreturn => return,
-        .error_set => return sema.fail(block, src, "error set is ignored", .{}),
+        .error_set => {
+            return sema.fail(block, src, "error set of type '{f}' is ignored", .{ty.fmt(pt)});
+        },
         .error_union => {
             const msg = msg: {
-                const msg = try sema.errMsg(src, "error union is ignored", .{});
+                const msg = try sema.errMsg(src, "error union of type '{f}' is ignored", .{ty.fmt(pt)});
                 errdefer msg.destroy(sema.gpa);
                 try sema.errNote(src, msg, "consider using 'try', 'catch', or 'if'", .{});
                 break :msg msg;
diff --git a/test/cases/compile_errors/ignored_deferred_function_call.zig b/test/cases/compile_errors/ignored_deferred_function_call.zig
index 9980128f90de825fe1dc542d35357cea925db948..63a7f489f1b01fedbfdf6354a6a87671ddd7bb20 100644
--- a/test/cases/compile_errors/ignored_deferred_function_call.zig
+++ b/test/cases/compile_errors/ignored_deferred_function_call.zig
@@ -14,6 +14,6 @@ fn bar2() anyerror {
 
 // error
 //
-// :2:14: error: error union is ignored
+// :2:14: error: error union of type 'anyerror!i32' is ignored
 // :2:14: note: consider using 'try', 'catch', or 'if'
-// :9:15: error: error set is ignored
+// :9:15: error: error set of type 'anyerror' is ignored
diff --git a/test/cases/compile_errors/ignored_expression_in_while_continuation.zig b/test/cases/compile_errors/ignored_expression_in_while_continuation.zig
index 4d4441fa9bc9309e03ce43fbb5ac52a90a478f62..79553e16049c44e30f11a1eb587120843693e79a 100644
--- a/test/cases/compile_errors/ignored_expression_in_while_continuation.zig
+++ b/test/cases/compile_errors/ignored_expression_in_while_continuation.zig
@@ -24,10 +24,10 @@ fn bad2() anyerror {
 
 // error
 //
-// :2:24: error: error union is ignored
+// :2:24: error: error union of type 'anyerror!void' is ignored
 // :2:24: note: consider using 'try', 'catch', or 'if'
-// :7:25: error: error union is ignored
+// :7:25: error: error union of type 'anyerror!void' is ignored
 // :7:25: note: consider using 'try', 'catch', or 'if'
-// :12:25: error: error union is ignored
+// :12:25: error: error union of type 'anyerror!void' is ignored
 // :12:25: note: consider using 'try', 'catch', or 'if'
-// :19:25: error: error set is ignored
+// :19:25: error: error set of type 'anyerror' is ignored