diff --git a/lib/support/plausible.c b/lib/support/plausible.c
index fafdcca3..6f0c4bcb 100644
--- a/lib/support/plausible.c
+++ b/lib/support/plausible.c
@@ -248,7 +248,9 @@ int check_plausibility(const char *device, int flags, int *ret_is_dev)
 	}
 
 #ifdef HAVE_MAGIC_H
-	if ((flags & CHECK_FS_EXIST) && magic_library_available()) {
+	if ((flags & CHECK_FS_EXIST) &&
+	    !getenv("E2FSPROGS_LIBMAGIC_SUPPRESS") &&
+	    magic_library_available()) {
 		const char *msg;
 		magic_t mag;
 		int has_magic = 0;
diff --git a/tests/f_detect_junk/expect b/tests/f_detect_junk/expect
index f3300def..4295886e 100644
--- a/tests/f_detect_junk/expect
+++ b/tests/f_detect_junk/expect
@@ -11,13 +11,10 @@ is corrupt, and you might try running e2fsck with an alternate superblock:
  or
     e2fsck -b 32768 <device>
 
-test.img contains `PNG image data, 148 x 31, 8-bit/color RGBA, non-interlaced' data
 *** debugfs
 test.img: Bad magic number in super-block while opening filesystem
-test.img contains `PNG image data, 148 x 31, 8-bit/color RGBA, non-interlaced' data
 *** tune2fs
 ../misc/tune2fs: Bad magic number in super-block while trying to open test.img
-test.img contains `PNG image data, 148 x 31, 8-bit/color RGBA, non-interlaced' data
 *** mke2fs
 Creating filesystem with 16384 1k blocks and 4096 inodes
 Superblock backups stored on blocks: 
diff --git a/tests/test_config b/tests/test_config
index 7f391575..547ef4ce 100644
--- a/tests/test_config
+++ b/tests/test_config
@@ -39,3 +39,5 @@ E2FSPROGS_SKIP_PROGRESS=yes
 export E2FSPROGS_SKIP_PROGRESS
 EXT2FS_NO_MTAB_OK=yes
 export EXT2FS_NO_MTAB_OK
+E2FSPROGS_LIBMAGIC_SUPPRESS=yes
+export E2FSPROGS_LIBMAGIC_SUPPRESS