diff --git a/hgext/convert/p4.py b/hgext/convert/p4.py
--- a/hgext/convert/p4.py
+++ b/hgext/convert/p4.py
@@ -45,7 +45,7 @@ class p4_source(converter_source):
 
     def _parse_view(self, path):
         "Read changes affecting the path"
-        cmd = "p4 -G changes -s submitted '%s'" % path
+        cmd = 'p4 -G changes -s submitted "%s"' % path
         stdout = util.popen(cmd)
         for d in loaditer(stdout):
             c = d.get("change", None)
@@ -64,7 +64,7 @@ class p4_source(converter_source):
             else:
                 views = {"//": ""}
         else:
-            cmd = "p4 -G client -o '%s'" % path
+            cmd = 'p4 -G client -o "%s"' % path
             clientspec = marshal.load(util.popen(cmd))
 
             views = {}
@@ -139,7 +139,7 @@ class p4_source(converter_source):
         return self.heads
 
     def getfile(self, name, rev):
-        cmd = "p4 -G print '%s#%s'" % (self.depotname[name], rev)
+        cmd = 'p4 -G print "%s#%s"' % (self.depotname[name], rev)
         stdout = util.popen(cmd)
 
         mode = None
diff --git a/tests/test-convert-p4 b/tests/test-convert-p4
old mode 100644
new mode 100755
--- a/tests/test-convert-p4
+++ b/tests/test-convert-p4
@@ -63,9 +63,9 @@ hg -R dst log --template 'rev=#rev# desc
 
 echo % interesting names
 echo dddd > "d d"
-mkdir " e "
-echo fff >" e /f "
-p4 add "d d" " e /f "
+mkdir " e"
+echo fff >" e/ f"
+p4 add "d d" " e/ f"
 p4 submit -d "add d e f"
 
 echo % convert again
diff --git a/tests/test-convert-p4.out b/tests/test-convert-p4.out
--- a/tests/test-convert-p4.out
+++ b/tests/test-convert-p4.out
@@ -62,10 +62,10 @@ rev=1 desc="change a" tags="" files="a"
 rev=0 desc="initial" tags="" files="a b/c"
 % interesting names
 //depot/test-mercurial-import/d d#1 - opened for add
-//depot/test-mercurial-import/ e /f #1 - opened for add
+//depot/test-mercurial-import/ e/ f#1 - opened for add
 Submitting change 5.
 Locking 2 files ...
-add //depot/test-mercurial-import/ e /f #1
+add //depot/test-mercurial-import/ e/ f#1
 add //depot/test-mercurial-import/d d#1
 Change 5 submitted.
 % convert again
@@ -80,7 +80,7 @@ scanning source...
 sorting...
 converting...
 0 add d e f
-rev=4 desc="add d e f" tags="tip" files=" e /f  d d"
+rev=4 desc="add d e f" tags="tip" files=" e/ f d d"
 rev=3 desc="change a b/c" tags="" files="a b/c"
 rev=2 desc="change b/c" tags="" files="b/c"
 rev=1 desc="change a" tags="" files="a"