diff --git a/mercurial/bundle2.py b/mercurial/bundle2.py
--- a/mercurial/bundle2.py
+++ b/mercurial/bundle2.py
@@ -2143,7 +2143,7 @@
 @parthandler('stream2', ('requirements', 'filecount', 'bytecount'))
 def handlestreamv2bundle(op, part):
 
-    requirements = part.params['requirements'].split()
+    requirements = urlreq.unquote(part.params['requirements']).split(',')
     filecount = int(part.params['filecount'])
     bytecount = int(part.params['bytecount'])
 
diff --git a/mercurial/exchange.py b/mercurial/exchange.py
--- a/mercurial/exchange.py
+++ b/mercurial/exchange.py
@@ -1793,7 +1793,7 @@
     bundler.prefercompressed = False
 
     filecount, bytecount, it = streamclone.generatev2(repo)
-    requirements = ' '.join(sorted(repo.requirements))
+    requirements = _formatrequirementsspec(repo.requirements)
     part = bundler.newpart('stream2', data=it)
     part.addparam('bytecount', '%d' % bytecount, mandatory=True)
     part.addparam('filecount', '%d' % filecount, mandatory=True)
diff --git a/tests/test-clone-uncompressed.t b/tests/test-clone-uncompressed.t
--- a/tests/test-clone-uncompressed.t
+++ b/tests/test-clone-uncompressed.t
@@ -199,23 +199,23 @@
   
 
   $ f --size --hex --bytes 256 body
-  body: size=112222
+  body: size=112230
   0000: 04 6e 6f 6e 65 48 47 32 30 00 00 00 00 00 00 00 |.noneHG20.......|
-  0010: 68 07 53 54 52 45 41 4d 32 00 00 00 00 03 00 09 |h.STREAM2.......|
-  0020: 05 09 04 0c 2d 62 79 74 65 63 6f 75 6e 74 39 38 |....-bytecount98|
+  0010: 70 07 53 54 52 45 41 4d 32 00 00 00 00 03 00 09 |p.STREAM2.......|
+  0020: 05 09 04 0c 35 62 79 74 65 63 6f 75 6e 74 39 38 |....5bytecount98|
   0030: 37 35 38 66 69 6c 65 63 6f 75 6e 74 31 30 33 30 |758filecount1030|
   0040: 72 65 71 75 69 72 65 6d 65 6e 74 73 64 6f 74 65 |requirementsdote|
-  0050: 6e 63 6f 64 65 20 66 6e 63 61 63 68 65 20 67 65 |ncode fncache ge|
-  0060: 6e 65 72 61 6c 64 65 6c 74 61 20 72 65 76 6c 6f |neraldelta revlo|
-  0070: 67 76 31 20 73 74 6f 72 65 00 00 80 00 73 08 42 |gv1 store....s.B|
-  0080: 64 61 74 61 2f 30 2e 69 00 03 00 01 00 00 00 00 |data/0.i........|
-  0090: 00 00 00 02 00 00 00 01 00 00 00 00 00 00 00 01 |................|
-  00a0: ff ff ff ff ff ff ff ff 80 29 63 a0 49 d3 23 87 |.........)c.I.#.|
-  00b0: bf ce fe 56 67 92 67 2c 69 d1 ec 39 00 00 00 00 |...Vg.g,i..9....|
-  00c0: 00 00 00 00 00 00 00 00 75 30 73 08 42 64 61 74 |........u0s.Bdat|
-  00d0: 61 2f 31 2e 69 00 03 00 01 00 00 00 00 00 00 00 |a/1.i...........|
-  00e0: 02 00 00 00 01 00 00 00 00 00 00 00 01 ff ff ff |................|
-  00f0: ff ff ff ff ff f9 76 da 1d 0d f2 25 6c de 08 db |......v....%l...|
+  0050: 6e 63 6f 64 65 25 32 43 66 6e 63 61 63 68 65 25 |ncode%2Cfncache%|
+  0060: 32 43 67 65 6e 65 72 61 6c 64 65 6c 74 61 25 32 |2Cgeneraldelta%2|
+  0070: 43 72 65 76 6c 6f 67 76 31 25 32 43 73 74 6f 72 |Crevlogv1%2Cstor|
+  0080: 65 00 00 80 00 73 08 42 64 61 74 61 2f 30 2e 69 |e....s.Bdata/0.i|
+  0090: 00 03 00 01 00 00 00 00 00 00 00 02 00 00 00 01 |................|
+  00a0: 00 00 00 00 00 00 00 01 ff ff ff ff ff ff ff ff |................|
+  00b0: 80 29 63 a0 49 d3 23 87 bf ce fe 56 67 92 67 2c |.)c.I.#....Vg.g,|
+  00c0: 69 d1 ec 39 00 00 00 00 00 00 00 00 00 00 00 00 |i..9............|
+  00d0: 75 30 73 08 42 64 61 74 61 2f 31 2e 69 00 03 00 |u0s.Bdata/1.i...|
+  00e0: 01 00 00 00 00 00 00 00 02 00 00 00 01 00 00 00 |................|
+  00f0: 00 00 00 00 01 ff ff ff ff ff ff ff ff f9 76 da |..............v.|
 
 --uncompressed is an alias to --stream