diff --git a/Sources/TestingMacros/SourceLocationMacro.swift b/Sources/TestingMacros/SourceLocationMacro.swift
index 3ba65a38b..240105323 100644
--- a/Sources/TestingMacros/SourceLocationMacro.swift
+++ b/Sources/TestingMacros/SourceLocationMacro.swift
@@ -22,4 +22,8 @@ public struct SourceLocationMacro: ExpressionMacro, Sendable {
   ) throws -> ExprSyntax {
     createSourceLocationExpr(of: macro, context: context)
   }
+
+  public static var formatMode: FormatMode {
+    .disabled
+  }
 }
diff --git a/Sources/TestingMacros/TagMacro.swift b/Sources/TestingMacros/TagMacro.swift
index 921cdad54..b94149c09 100644
--- a/Sources/TestingMacros/TagMacro.swift
+++ b/Sources/TestingMacros/TagMacro.swift
@@ -102,4 +102,8 @@ public struct TagMacro: PeerMacro, AccessorMacro, Sendable {
     }
     return []
   }
+
+  public static var formatMode: FormatMode {
+    .disabled
+  }
 }