diff --git a/plugins/git4idea/src/git4idea/merge/GitMergeDialog.kt b/plugins/git4idea/src/git4idea/merge/GitMergeDialog.kt
index 36c6030303ff..eb0bca24c91c 100644
--- a/plugins/git4idea/src/git4idea/merge/GitMergeDialog.kt
+++ b/plugins/git4idea/src/git4idea/merge/GitMergeDialog.kt
@@ -425,7 +425,7 @@ class GitMergeDialog(private val project: Project,
   companion object {
     private val LOG = logger<GitMergeDialog>()
     private val LINK_REF_REGEX = Pattern.compile(".+\\s->\\s.+")
-    private val BRANCH_NAME_REGEX = Pattern.compile(". (.+\\s*)")
+    private val BRANCH_NAME_REGEX = Pattern.compile(". (\\S+)\\s*")
 
     @NlsSafe
     private const val REMOTE_REF = "remotes/"