diff --git a/Sources/Build/BuildOperationBuildSystemDelegateHandler.swift b/Sources/Build/BuildOperationBuildSystemDelegateHandler.swift
index 91d4edf4005..5121b418e8f 100644
--- a/Sources/Build/BuildOperationBuildSystemDelegateHandler.swift
+++ b/Sources/Build/BuildOperationBuildSystemDelegateHandler.swift
@@ -790,8 +790,10 @@ final class BuildOperationBuildSystemDelegateHandler: LLBuildBuildSystemDelegate
         queue.async {
             if let buffer = self.nonSwiftMessageBuffers[command.name] {
                 self.progressAnimation.clear()
-                self.outputStream.send(buffer)
-                self.outputStream.flush()
+                if self.logLevel.isVerbose {
+                    self.outputStream.send(buffer)
+                    self.outputStream.flush()
+                }
                 self.nonSwiftMessageBuffers[command.name] = nil
             }
         }