diff --git a/tests/gem5/stats/configs/pystat_scalar_check.py b/tests/gem5/stats/configs/pystat_scalar_check.py
index 3c98f901df..1fe61b7f62 100644
--- a/tests/gem5/stats/configs/pystat_scalar_check.py
+++ b/tests/gem5/stats/configs/pystat_scalar_check.py
@@ -25,6 +25,7 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 import argparse
+import json
 import sys
 
 import m5
@@ -99,8 +100,8 @@ if output != expected_output:
     print("Output statistics do not match expected:", file=sys.stderr)
     print("", file=sys.stderr)
     print("Expected:", file=sys.stderr)
-    print(expected_output, file=sys.stderr)
+    print(json.dumps(expected_output, indent=4), file=sys.stderr)
     print("", file=sys.stderr)
     print("Actual:", file=sys.stderr)
-    print(output, file=sys.stderr)
+    print(json.dumps(output, indent=4), file=sys.stderr)
     sys.exit(1)
diff --git a/tests/gem5/stats/configs/pystat_sparse_dist_check.py b/tests/gem5/stats/configs/pystat_sparse_dist_check.py
index 57afbd7ffa..2d7bc4b6c1 100644
--- a/tests/gem5/stats/configs/pystat_sparse_dist_check.py
+++ b/tests/gem5/stats/configs/pystat_sparse_dist_check.py
@@ -25,6 +25,7 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 import argparse
+import json
 import sys
 
 import m5
@@ -113,8 +114,8 @@ if output != expected_output:
     print("Output statistics do not match expected:", file=sys.stderr)
     print("", file=sys.stderr)
     print("Expected:", file=sys.stderr)
-    print(expected_output, file=sys.stderr)
+    print(json.dumps(expected_output, indent=4), file=sys.stderr)
     print("", file=sys.stderr)
     print("Actual:", file=sys.stderr)
-    print(output, file=sys.stderr)
+    print(json.dumps(output, indent=4), file=sys.stderr)
     sys.exit(1)
diff --git a/tests/gem5/stats/configs/pystat_vector2d_check.py b/tests/gem5/stats/configs/pystat_vector2d_check.py
index 539a3cb6be..617463e56f 100644
--- a/tests/gem5/stats/configs/pystat_vector2d_check.py
+++ b/tests/gem5/stats/configs/pystat_vector2d_check.py
@@ -25,6 +25,7 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 import argparse
+import json
 import sys
 
 import m5
@@ -174,8 +175,8 @@ if output != expected_output:
     print("Output statistics do not match expected:", file=sys.stderr)
     print("", file=sys.stderr)
     print("Expected:", file=sys.stderr)
-    print(expected_output, file=sys.stderr)
+    print(json.dumps(expected_output, indent=4), file=sys.stderr)
     print("", file=sys.stderr)
     print("Actual:", file=sys.stderr)
-    print(output, file=sys.stderr)
+    print(json.dumps(output, indent=4), file=sys.stderr)
     sys.exit(1)
diff --git a/tests/gem5/stats/configs/pystat_vector_check.py b/tests/gem5/stats/configs/pystat_vector_check.py
index 1f8b18a577..e708f0319f 100644
--- a/tests/gem5/stats/configs/pystat_vector_check.py
+++ b/tests/gem5/stats/configs/pystat_vector_check.py
@@ -25,6 +25,7 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 import argparse
+import json
 import sys
 
 import m5
@@ -139,8 +140,8 @@ if output != expected_output:
     print("Output statistics do not match expected:", file=sys.stderr)
     print("", file=sys.stderr)
     print("Expected:", file=sys.stderr)
-    print(expected_output, file=sys.stderr)
+    print(json.dumps(expected_output, indent=4), file=sys.stderr)
     print("", file=sys.stderr)
     print("Actual:", file=sys.stderr)
-    print(output, file=sys.stderr)
+    print(json.dumps(output, indent=4), file=sys.stderr)
     sys.exit(1)