diff --git a/dvc/repo/metrics/diff.py b/dvc/repo/metrics/diff.py
index f6b8c1516..abede5c8a 100644
--- a/dvc/repo/metrics/diff.py
+++ b/dvc/repo/metrics/diff.py
@@ -11,14 +11,9 @@ def diff(repo, *args, a_rev=None, b_rev=None, **kwargs):
     a_rev = a_rev or "HEAD"
     b_rev = b_rev or "workspace"
 
-    metrics = repo.metrics.show(*args, **kwargs, revs=[a_rev, b_rev])
-
-    # workspace may have been replaced by active branch
-    workspace_rev = (a_rev == "workspace") or (b_rev == "workspace")
-    if workspace_rev and "workspace" not in metrics:
-        active_branch = repo.scm.active_branch()
-        if active_branch in metrics:
-            metrics["workspace"] = metrics[active_branch]
+    metrics = repo.metrics.show(
+        *args, **kwargs, revs=[a_rev, b_rev], hide_workspace=False
+    )
 
     old = metrics.get(a_rev, {}).get("data", {})
     new = metrics.get(b_rev, {}).get("data", {})
diff --git a/dvc/repo/metrics/show.py b/dvc/repo/metrics/show.py
index 82ca5cfa4..d482b2db0 100644
--- a/dvc/repo/metrics/show.py
+++ b/dvc/repo/metrics/show.py
@@ -124,6 +124,7 @@ def show(
     revs=None,
     all_commits=False,
     onerror=None,
+    hide_workspace=True,
 ):
     if onerror is None:
         onerror = onerror_collect
@@ -142,16 +143,17 @@ def show(
             repo, targets, rev, recursive, onerror=onerror
         )
 
-    # Hide workspace metrics if they are the same as in the active branch
-    try:
-        active_branch = repo.scm.active_branch()
-    except (SCMError, NoSCMError):
-        # SCMError - detached head
-        # NoSCMError - no repo case
-        pass
-    else:
-        if res.get("workspace") == res.get(active_branch):
-            res.pop("workspace", None)
+    if hide_workspace:
+        # Hide workspace metrics if they are the same as in the active branch
+        try:
+            active_branch = repo.scm.active_branch()
+        except (SCMError, NoSCMError):
+            # SCMError - detached head
+            # NoSCMError - no repo case
+            pass
+        else:
+            if res.get("workspace") == res.get(active_branch):
+                res.pop("workspace", None)
 
     errored = errored_revisions(res)
     if errored:
diff --git a/dvc/repo/params/diff.py b/dvc/repo/params/diff.py
index 8f87966ae..79c68b1e4 100644
--- a/dvc/repo/params/diff.py
+++ b/dvc/repo/params/diff.py
@@ -11,14 +11,9 @@ def diff(repo, *args, a_rev=None, b_rev=None, **kwargs):
     a_rev = a_rev or "HEAD"
     b_rev = b_rev or "workspace"
 
-    params = repo.params.show(*args, **kwargs, revs=[a_rev, b_rev])
-
-    # workspace may have been replaced by active branch
-    workspace_rev = (a_rev == "workspace") or (b_rev == "workspace")
-    if workspace_rev and "workspace" not in params:
-        active_branch = repo.scm.active_branch()
-        if active_branch in params:
-            params["workspace"] = params[active_branch]
+    params = repo.params.show(
+        *args, **kwargs, revs=[a_rev, b_rev], hide_workspace=False
+    )
 
     old = params.get(a_rev, {}).get("data", {})
     new = params.get(b_rev, {}).get("data", {})
diff --git a/dvc/repo/params/show.py b/dvc/repo/params/show.py
index f4a9b48c3..c432f89d8 100644
--- a/dvc/repo/params/show.py
+++ b/dvc/repo/params/show.py
@@ -144,6 +144,7 @@ def show(
     deps=False,
     onerror: Callable = None,
     stages=None,
+    hide_workspace=True,
 ):
     if onerror is None:
         onerror = onerror_collect
@@ -165,16 +166,17 @@ def show(
         if params:
             res[branch] = params
 
-    # Hide workspace params if they are the same as in the active branch
-    try:
-        active_branch = repo.scm.active_branch()
-    except (SCMError, NoSCMError):
-        # SCMError - detached head
-        # NoSCMError - no repo case
-        pass
-    else:
-        if res.get("workspace") == res.get(active_branch):
-            res.pop("workspace", None)
+    if hide_workspace:
+        # Hide workspace params if they are the same as in the active branch
+        try:
+            active_branch = repo.scm.active_branch()
+        except (SCMError, NoSCMError):
+            # SCMError - detached head
+            # NoSCMError - no repo case
+            pass
+        else:
+            if res.get("workspace") == res.get(active_branch):
+                res.pop("workspace", None)
 
     errored = errored_revisions(res)
     if errored: