diff --git a/src/shared/dissect-image.c b/src/shared/dissect-image.c
index 45bed868cb..b84ef46442 100644
--- a/src/shared/dissect-image.c
+++ b/src/shared/dissect-image.c
@@ -1907,11 +1907,6 @@ static int mount_partition(
 
         if (!fstype)
                 return -EAFNOSUPPORT;
-        r = dissect_fstype_ok(fstype);
-        if (r < 0)
-                return r;
-        if (!r)
-                return -EIDRM; /* Recognizable error */
 
         /* We are looking at an encrypted partition? This either means stacked encryption, or the caller
          * didn't call dissected_image_decrypt() beforehand. Let's return a recognizable error for this
@@ -1919,6 +1914,12 @@ static int mount_partition(
         if (streq(fstype, "crypto_LUKS"))
                 return -EUNATCH;
 
+        r = dissect_fstype_ok(fstype);
+        if (r < 0)
+                return r;
+        if (!r)
+                return -EIDRM; /* Recognizable error */
+
         rw = m->rw && !(flags & DISSECT_IMAGE_MOUNT_READ_ONLY);
 
         discard = ((flags & DISSECT_IMAGE_DISCARD) ||