diff --git a/cli/cli.go b/cli/cli.go
index d43fc9a20..9bedb5827 100644
--- a/cli/cli.go
+++ b/cli/cli.go
@@ -24,7 +24,7 @@ import (
 	"go.uber.org/zap/zapcore"
 )
 
-const Version = "0.5.11"
+const Version = "0.5.12"
 const defaultConfigFile = "load"
 const stdinConfigSelector = "-"
 
diff --git a/components/guns/grpc/core.go b/components/guns/grpc/core.go
index 65609947a..d590b6f16 100644
--- a/components/guns/grpc/core.go
+++ b/components/guns/grpc/core.go
@@ -88,7 +88,7 @@ func (g *Gun) WarmUp(opts *warmup.Options) (interface{}, error) {
 	refClient := grpcreflect.NewClientAuto(refCtx, conn)
 	listServices, err := refClient.ListServices()
 	if err != nil {
-		g.GunDeps.Log.Error("failed to get services list", zap.Error(err))
+		opts.Log.Error("failed to get services list", zap.Error(err)) // WarmUp calls before Bind()
 		return nil, fmt.Errorf("refClient.ListServices err: %w", err)
 	}
 	services := make(map[string]desc.MethodDescriptor)
@@ -98,7 +98,7 @@ func (g *Gun) WarmUp(opts *warmup.Options) (interface{}, error) {
 			if grpcreflect.IsElementNotFoundError(err) {
 				continue
 			}
-			g.GunDeps.Log.Error("cant resolveService", zap.String("service_name", s), zap.Error(err))
+			opts.Log.Error("cant resolveService", zap.String("service_name", s), zap.Error(err)) // WarmUp calls before Bind()
 			return nil, fmt.Errorf("cant resolveService %s; err: %w", s, err)
 		}
 		listMethods := service.GetMethods()
diff --git a/components/providers/grpc/grpcjson/provider.go b/components/providers/grpc/grpcjson/provider.go
index 5da127e6c..8fefd1c0f 100644
--- a/components/providers/grpc/grpcjson/provider.go
+++ b/components/providers/grpc/grpcjson/provider.go
@@ -82,10 +82,14 @@ func (p *Provider) start(ctx context.Context, ammoFile afero.File) error {
 				return nil
 			}
 		}
+		err := scanner.Err()
+		if err != nil {
+			return errors.Wrap(err, "gPRC Provider scan() err")
+		}
 		if p.Passes != 0 && passNum >= p.Passes {
 			break
 		}
-		_, err := ammoFile.Seek(0, 0)
+		_, err = ammoFile.Seek(0, 0)
 		if err != nil {
 			return errors.Wrap(err, "Failed to seek ammo file")
 		}