diff --git a/buildah.go b/buildah.go
index 9de72ca8d..27d67b633 100644
--- a/buildah.go
+++ b/buildah.go
@@ -132,8 +132,8 @@ type Builder struct {
 	ImageHistoryComment string `json:"history-comment,omitempty"`
 
 	// Image metadata and runtime settings, in multiple formats.
-	OCIv1  v1.Image       `json:"ociv1,omitempty"`
-	Docker docker.V2Image `json:"docker,omitempty"`
+	OCIv1  v1.Image       `json:"ociv1"`
+	Docker docker.V2Image `json:"docker"`
 	// DefaultMountsFilePath is the file path holding the mounts to be mounted in "host-path:container-path" format.
 	DefaultMountsFilePath string `json:"defaultMountsFilePath,omitempty"`
 
diff --git a/copier/copier.go b/copier/copier.go
index dbe7373b5..fb3184389 100644
--- a/copier/copier.go
+++ b/copier/copier.go
@@ -162,13 +162,13 @@ type request struct {
 	preservedDirectory       string
 	Globs                    []string `json:",omitempty"` // used by stat, get
 	preservedGlobs           []string
-	StatOptions              StatOptions              `json:",omitempty"`
-	GetOptions               GetOptions               `json:",omitempty"`
-	PutOptions               PutOptions               `json:",omitempty"`
-	MkdirOptions             MkdirOptions             `json:",omitempty"`
-	RemoveOptions            RemoveOptions            `json:",omitempty"`
-	EnsureOptions            EnsureOptions            `json:",omitempty"`
-	ConditionalRemoveOptions ConditionalRemoveOptions `json:",omitempty"`
+	StatOptions              StatOptions
+	GetOptions               GetOptions
+	PutOptions               PutOptions
+	MkdirOptions             MkdirOptions
+	RemoveOptions            RemoveOptions
+	EnsureOptions            EnsureOptions
+	ConditionalRemoveOptions ConditionalRemoveOptions
 }
 
 func (req *request) Excludes() []string {
@@ -248,15 +248,15 @@ func (req *request) GIDMap() []idtools.IDMap {
 
 // Response encodes a single response.
 type response struct {
-	Error             string                    `json:",omitempty"`
-	Stat              statResponse              `json:",omitempty"`
-	Eval              evalResponse              `json:",omitempty"`
-	Get               getResponse               `json:",omitempty"`
-	Put               putResponse               `json:",omitempty"`
-	Mkdir             mkdirResponse             `json:",omitempty"`
-	Remove            removeResponse            `json:",omitempty"`
-	Ensure            ensureResponse            `json:",omitempty"`
-	ConditionalRemove conditionalRemoveResponse `json:",omitempty"`
+	Error             string `json:",omitempty"`
+	Stat              statResponse
+	Eval              evalResponse
+	Get               getResponse
+	Put               putResponse
+	Mkdir             mkdirResponse
+	Remove            removeResponse
+	Ensure            ensureResponse
+	ConditionalRemove conditionalRemoveResponse
 }
 
 // statResponse encodes a response for a single Stat request.
diff --git a/docker/types.go b/docker/types.go
index 997698709..352ae4799 100644
--- a/docker/types.go
+++ b/docker/types.go
@@ -124,7 +124,7 @@ type V1Compatibility struct {
 	Created         time.Time `json:"created"`
 	ContainerConfig struct {
 		Cmd []string
-	} `json:"container_config,omitempty"`
+	} `json:"container_config"`
 	Author    string `json:"author,omitempty"`
 	ThrowAway bool   `json:"throwaway,omitempty"`
 }
@@ -143,7 +143,7 @@ type V1Image struct {
 	// Container is the id of the container used to commit
 	Container string `json:"container,omitempty"`
 	// ContainerConfig is the configuration of the container that is committed into the image
-	ContainerConfig Config `json:"container_config,omitempty"`
+	ContainerConfig Config `json:"container_config"`
 	// DockerVersion specifies the version of Docker that was used to build the image
 	DockerVersion string `json:"docker_version,omitempty"`
 	// Author is the name of the author that was specified when committing the image
diff --git a/internal/sbom/merge.go b/internal/sbom/merge.go
index dddea84c5..57487b083 100644
--- a/internal/sbom/merge.go
+++ b/internal/sbom/merge.go
@@ -202,7 +202,7 @@ func Merge(mergeStrategy define.SBOMMergeStrategy, inputOutputSBOM, inputSBOM, o
 		Dependencies []string `json:"dependencies,omitempty"`
 	}
 	type purlDocument struct {
-		ImageContents purlImageContents `json:"image_contents,omitempty"`
+		ImageContents purlImageContents `json:"image_contents"`
 	}
 	purls := []string{}
 	seenPurls := make(map[string]struct{})
diff --git a/tests/conformance/conformance_test.go b/tests/conformance/conformance_test.go
index 45e2fa1ec..ed7853d3e 100644
--- a/tests/conformance/conformance_test.go
+++ b/tests/conformance/conformance_test.go
@@ -880,7 +880,7 @@ func buildPost(t *testing.T, test testCase, err error, buildTool, outputString,
 // FSTree holds the information we have about an image's filesystem
 type FSTree struct {
 	Layers []Layer `json:"layers,omitempty"`
-	Tree   FSEntry `json:"tree,omitempty"`
+	Tree   FSEntry `json:"tree"`
 }
 
 // Layer keeps track of the digests and contents of a layer blob
@@ -900,7 +900,7 @@ type FSHeader struct {
 	Mode     int64             `json:"mode,omitempty"`
 	UID      int               `json:"uid"`
 	GID      int               `json:"gid"`
-	ModTime  time.Time         `json:"mtime,omitempty"`
+	ModTime  time.Time         `json:"mtime"`
 	Devmajor int64             `json:"devmajor,omitempty"`
 	Devminor int64             `json:"devminor,omitempty"`
 	Xattrs   map[string]string `json:"xattrs,omitempty"`