diff --git a/tests/integration/data/regression_output/dump.201912060006/core/ptype thread_union b/tests/integration/data/regression_output/dump.201912060006/core/ptype thread_union
new file mode 100644
index 0000000..3271d9f
--- /dev/null
+++ b/tests/integration/data/regression_output/dump.201912060006/core/ptype thread_union	
@@ -0,0 +1,6 @@
+union thread_union {
+	struct task_struct task;
+	unsigned long stack[2048];
+}
+@#$ EXIT CODE $#@
+0
diff --git a/tests/integration/data/regression_output/dump.201912060006/core/ptype zfs_case 'struct v' thread_union b/tests/integration/data/regression_output/dump.201912060006/core/ptype zfs_case
similarity index 51%
rename from tests/integration/data/regression_output/dump.201912060006/core/ptype zfs_case 'struct v' thread_union
rename to tests/integration/data/regression_output/dump.201912060006/core/ptype zfs_case
index d9d5efe..b7d88df 100644
--- a/tests/integration/data/regression_output/dump.201912060006/core/ptype zfs_case 'struct v' thread_union	
+++ b/tests/integration/data/regression_output/dump.201912060006/core/ptype zfs_case	
@@ -3,12 +3,5 @@ enum zfs_case {
 	ZFS_CASE_INSENSITIVE = 1,
 	ZFS_CASE_MIXED = 2,
 }
-struct v {
-	uint8_t b[16];
-}
-union thread_union {
-	struct task_struct task;
-	unsigned long stack[2048];
-}
 @#$ EXIT CODE $#@
 0
diff --git a/tests/integration/data/regression_output/dump.202303131823/core/ptype thread_union b/tests/integration/data/regression_output/dump.202303131823/core/ptype thread_union
new file mode 100644
index 0000000..3271d9f
--- /dev/null
+++ b/tests/integration/data/regression_output/dump.202303131823/core/ptype thread_union	
@@ -0,0 +1,6 @@
+union thread_union {
+	struct task_struct task;
+	unsigned long stack[2048];
+}
+@#$ EXIT CODE $#@
+0
diff --git a/tests/integration/data/regression_output/dump.202303131823/core/ptype zfs_case 'struct v' thread_union b/tests/integration/data/regression_output/dump.202303131823/core/ptype zfs_case
similarity index 51%
rename from tests/integration/data/regression_output/dump.202303131823/core/ptype zfs_case 'struct v' thread_union
rename to tests/integration/data/regression_output/dump.202303131823/core/ptype zfs_case
index 2aa32ee..b7d88df 100644
--- a/tests/integration/data/regression_output/dump.202303131823/core/ptype zfs_case 'struct v' thread_union	
+++ b/tests/integration/data/regression_output/dump.202303131823/core/ptype zfs_case	
@@ -3,12 +3,5 @@ enum zfs_case {
 	ZFS_CASE_INSENSITIVE = 1,
 	ZFS_CASE_MIXED = 2,
 }
-struct v {
-	uint8_t b[32];
-}
-union thread_union {
-	struct task_struct task;
-	unsigned long stack[2048];
-}
 @#$ EXIT CODE $#@
 0
diff --git a/tests/integration/infra.py b/tests/integration/infra.py
index 39ff9f5..930416c 100644
--- a/tests/integration/infra.py
+++ b/tests/integration/infra.py
@@ -281,6 +281,14 @@ def verify_cmd_output_and_code(self,
         assert self.repl_invoke(cmd) == ref_code
         captured = capsys.readouterr()
         if not stripped:
+            with capsys.disabled():
+                if captured.out != ref_output:
+                    #
+                    # If we are about to fail the assertion print the
+                    # actual mismatch in the logs before failing.
+                    #
+                    print("expected:\n" + ref_output)
+                    print("got:\n" + captured.out)
             assert captured.out == ref_output
         else:
             for i, n in enumerate(captured.out):
diff --git a/tests/integration/test_core_generic.py b/tests/integration/test_core_generic.py
index 9f43982..8a5ec05 100644
--- a/tests/integration/test_core_generic.py
+++ b/tests/integration/test_core_generic.py
@@ -125,7 +125,8 @@
     # ptype
     "ptype spa_t",
     "ptype spa vdev",
-    "ptype zfs_case 'struct v' thread_union",
+    "ptype zfs_case",
+    "ptype thread_union",
     "ptype 'struct spa'",
 
     # sizeof