diff --git a/pkg/fieldpath/fieldpath.go b/pkg/fieldpath/fieldpath.go
index bd4d2f371d0..ff707e05dce 100644
--- a/pkg/fieldpath/fieldpath.go
+++ b/pkg/fieldpath/fieldpath.go
@@ -63,7 +63,7 @@ func ExtractFieldPathAsString(obj interface{}, fieldPath string) (string, error)
 		return accessor.GetNamespace(), nil
 	}
 
-	return "", fmt.Errorf("Unsupported fieldPath: %v", fieldPath)
+	return "", fmt.Errorf("unsupported fieldPath: %v", fieldPath)
 }
 
 // TODO: move the functions below to pkg/api/util/resources
@@ -146,7 +146,7 @@ func InternalExtractContainerResourceValue(fs *api.ResourceFieldSelector, contai
 		return convertResourceMemoryToString(container.Resources.Requests.Memory(), divisor)
 	}
 
-	return "", fmt.Errorf("Unsupported container resource : %v", fs.Resource)
+	return "", fmt.Errorf("unsupported container resource : %v", fs.Resource)
 }
 
 // findContainerInPod finds a container by its name in the provided pod
@@ -159,7 +159,7 @@ func findContainerInPod(pod *v1.Pod, containerName string) (*v1.Container, error
 	return nil, fmt.Errorf("container %s not found", containerName)
 }
 
-// convertResourceCPUTOString converts cpu value to the format of divisor and returns
+// convertResourceCPUToString converts cpu value to the format of divisor and returns
 // ceiling of the value.
 func convertResourceCPUToString(cpu *resource.Quantity, divisor resource.Quantity) (string, error) {
 	c := int64(math.Ceil(float64(cpu.MilliValue()) / float64(divisor.MilliValue())))
diff --git a/pkg/fieldpath/fieldpath_test.go b/pkg/fieldpath/fieldpath_test.go
index a7e74b1f61e..3e49a3d672e 100644
--- a/pkg/fieldpath/fieldpath_test.go
+++ b/pkg/fieldpath/fieldpath_test.go
@@ -100,7 +100,7 @@ func TestExtractFieldPathAsString(t *testing.T) {
 					Namespace: "object-namespace",
 				},
 			},
-			expectedMessageFragment: "Unsupported fieldPath",
+			expectedMessageFragment: "unsupported fieldPath",
 		},
 	}
 
@@ -109,13 +109,13 @@ func TestExtractFieldPathAsString(t *testing.T) {
 		if err != nil {
 			if tc.expectedMessageFragment != "" {
 				if !strings.Contains(err.Error(), tc.expectedMessageFragment) {
-					t.Errorf("%v: Unexpected error message: %q, expected to contain %q", tc.name, err, tc.expectedMessageFragment)
+					t.Errorf("%v: unexpected error message: %q, expected to contain %q", tc.name, err, tc.expectedMessageFragment)
 				}
 			} else {
 				t.Errorf("%v: unexpected error: %v", tc.name, err)
 			}
 		} else if e := tc.expectedValue; e != "" && e != actual {
-			t.Errorf("%v: Unexpected result; got %q, expected %q", tc.name, actual, e)
+			t.Errorf("%v: unexpected result; got %q, expected %q", tc.name, actual, e)
 		}
 	}
 }