diff --git a/src/python/jw/pkg/cmds/projects/BaseCmdPkgRelations.py b/src/python/jw/pkg/cmds/projects/BaseCmdPkgRelations.py
index ab6ae5a9..74731c8b 100644
--- a/src/python/jw/pkg/cmds/projects/BaseCmdPkgRelations.py
+++ b/src/python/jw/pkg/cmds/projects/BaseCmdPkgRelations.py
@@ -128,11 +128,12 @@ class BaseCmdPkgRelations(Cmd):
                                 case self.Syntax.semver:
                                     pass
                                 case self.Syntax.debian:
-                                    match expanded_dep[1]:
-                                        case '<':
-                                            expanded_dep[1] = '<<'
-                                        case '>':
-                                            expanded_dep[1] = '>>'
+                                    if len(expanded_dep) == 3:
+                                        match expanded_dep[1]:
+                                            case '<':
+                                                expanded_dep[1] = '<<'
+                                            case '>':
+                                                expanded_dep[1] = '>>'
                                 case '_':
                                    raise NotImplementedError(f'Unknown dependency syntax "{syntax}" for dependency "{dep[0]} {dep[1]} {dep[3]}"')
                             dep_str = ' '.join(expanded_dep)