diff --git a/build/build.go b/build/build.go
index 24e7b376..6a18091c 100644
--- a/build/build.go
+++ b/build/build.go
@@ -355,7 +355,7 @@ func toSolveOpt(ctx context.Context, node builder.Node, multiDriver bool, opt Op
 					}
 				}
 			} else if !nodeDriver.Features(ctx)[driver.DockerExporter] {
-				return nil, nil, notSupported(driver.DockerExporter, nodeDriver, "https:/docs.docker.com/go/build-exporters/")
+				return nil, nil, notSupported(driver.DockerExporter, nodeDriver, "https://docs.docker.com/go/build-exporters/")
 			}
 		}
 		if e.Type == "image" && nodeDriver.IsMobyDriver() {