diff --git a/tests/qemu-iotests/206.out b/tests/qemu-iotests/206.out
index 80cd274223..7e95694777 100644
--- a/tests/qemu-iotests/206.out
+++ b/tests/qemu-iotests/206.out
@@ -18,7 +18,7 @@ virtual size: 128 MiB (134217728 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -42,7 +42,7 @@ virtual size: 64 MiB (67108864 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -66,7 +66,7 @@ virtual size: 32 MiB (33554432 bytes)
 cluster_size: 2097152
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: true
     refcount bits: 1
     corrupt: false
@@ -92,7 +92,7 @@ backing file: TEST_IMG.base
 backing file format: IMGFMT
 Format specific information:
     compat: 0.10
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     refcount bits: 16
 
 === Successful image creation (encrypted) ===
@@ -109,7 +109,7 @@ encrypted: yes
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     encrypt:
diff --git a/tests/qemu-iotests/242.out b/tests/qemu-iotests/242.out
index 3759c99284..ce231424a7 100644
--- a/tests/qemu-iotests/242.out
+++ b/tests/qemu-iotests/242.out
@@ -12,7 +12,7 @@ virtual size: 1 MiB (1048576 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -34,7 +34,7 @@ virtual size: 1 MiB (1048576 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     bitmaps:
         [0]:
@@ -68,7 +68,7 @@ virtual size: 1 MiB (1048576 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     bitmaps:
         [0]:
@@ -110,7 +110,7 @@ virtual size: 1 MiB (1048576 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     bitmaps:
         [0]:
@@ -161,7 +161,7 @@ virtual size: 1 MiB (1048576 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     bitmaps:
         [0]:
diff --git a/tests/qemu-iotests/274.out b/tests/qemu-iotests/274.out
index 1d2928e14d..1ce40d839a 100644
--- a/tests/qemu-iotests/274.out
+++ b/tests/qemu-iotests/274.out
@@ -50,7 +50,7 @@ backing file: TEST_DIR/PID-base
 backing file format: IMGFMT
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -79,7 +79,7 @@ backing file: TEST_DIR/PID-base
 backing file format: IMGFMT
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -114,7 +114,7 @@ backing file: TEST_DIR/PID-base
 backing file format: IMGFMT
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -141,7 +141,7 @@ virtual size: 2 MiB (2097152 bytes)
 cluster_size: 65536
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
@@ -176,7 +176,7 @@ backing file: TEST_DIR/PID-base
 backing file format: IMGFMT
 Format specific information:
     compat: 1.1
-    compression type: zlib
+    compression type: COMPRESSION_TYPE
     lazy refcounts: false
     refcount bits: 16
     corrupt: false
diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 65780c6098..8cdb381f2a 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -497,6 +497,8 @@ def filter_img_info(output, filename):
                       'uuid: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX',
                       line)
         line = re.sub('cid: [0-9]+', 'cid: XXXXXXXXXX', line)
+        line = re.sub('(compression type: )(zlib|zstd)', r'\1COMPRESSION_TYPE',
+                      line)
         lines.append(line)
     return '\n'.join(lines)