diff --git a/examples/requirements.txt b/examples/requirements.txt
index 71054d5..2eb5a0b 100644
--- a/examples/requirements.txt
+++ b/examples/requirements.txt
@@ -16,10 +16,10 @@ Sphinx==1.3.3
 sphinx-rtd-theme==0.1.9
 
 # VSC repositories
-[-e] git+git://git.myproject.org/MyProject#egg=MyProject
+[-e] git+git://git.myproject.org/MyProject#egg=MyProject # Git
 [-e] git://git.myproject.org/MyProject.git@v1.0#egg=MyProject
-[-e] hg+https://hg.myproject.org/MyProject#egg=MyProject
+[-e] hg+https://hg.myproject.org/MyProject#egg=MyProject # Mercurial
 [-e] hg+http://hg.myproject.org/MyProject@da39a3ee5e6b#egg=MyProject
-[-e] svn+http://svn.myproject.org/svn/MyProject/trunk@2019#egg=MyProject
-[-e] bzr+ssh://user@myproject.org/MyProject/trunk#egg=MyProject
+[-e] svn+http://svn.myproject.org/svn/MyProject/trunk@2019#egg=MyProject # Subversion
+[-e] bzr+ssh://user@myproject.org/MyProject/trunk#egg=MyProject # Bazaar
 [-e] bzr+https://bzr.myproject.org/MyProject/trunk@2019#egg=MyProject
diff --git a/syntax/requirements.vim b/syntax/requirements.vim
index fc9a6f1..1ece7d4 100644
--- a/syntax/requirements.vim
+++ b/syntax/requirements.vim
@@ -9,11 +9,11 @@ endif
 
 syn case match
 
-syn match requirementsComment "#.*$"
+syn region requirementsComment start="[ \t]*#" end="$"
 syn match requirementsCommandOption "\v^\[?--?[a-zA-Z\-]*\]?"
 syn match requirementsVersionSpecifiers "\v(\=\=\=?|\<\=?|\>\=?|\~\=|\!\=)"
 syn match requirementsPackageName "\v^[a-zA-Z][a-zA-Z\-0-9]*"
-syn match requirementsVersionControls "\v(git\+?|hg\+|svn\+|bzr\+)\S+$"
+syn match requirementsVersionControls "\v(git\+?|hg\+|svn\+|bzr\+)\S+"
 
 hi link requirementsComment Comment
 hi link requirementsCommandOption Special