diff --git a/src/git_flow/command/tag.py b/src/git_flow/command/tag.py
index 3d3d862..2fcb475 100644
--- a/src/git_flow/command/tag.py
+++ b/src/git_flow/command/tag.py
@@ -91,7 +91,7 @@ class TagCommand(Command):
         tag = Git.get_current_tag() or f"v0.0.0-{branch}"
 
         until_dash = tag.index("-") if "-" in tag else None
-        suffix = tag[until_dash + 1 :] if until_dash is not None else ""
+        suffix = tag[until_dash:] if until_dash is not None else ""
         [major, minor, patch] = map(int, tag[1:until_dash].split("."))
 
         if increment == SEMVER_MAJOR:
@@ -104,4 +104,4 @@ class TagCommand(Command):
         elif increment == SEMVER_PATCH:
             patch += 1
 
-        return None if increment == SEMVER_SKIP else f"v{major}.{minor}.{patch}-{suffix}"
+        return None if increment == SEMVER_SKIP else f"v{major}.{minor}.{patch}{suffix}"