diff --git a/renderer/unit.py b/renderer/unit.py
index 46f4ffc..86f6c9e 100644
--- a/renderer/unit.py
+++ b/renderer/unit.py
@@ -44,7 +44,7 @@ class Unit(SpanToken):
         # Group all units together in a capture group.
         + "|".join(units)
         # Word boundary check at end of unit to ensure proper handling of units like A, Ah etc.
-        + r")\b"
+        + r")(?!\w)"
     )
 
     value: str
diff --git a/test/test_unit.py b/test/test_unit.py
index f37bc09..763aa18 100644
--- a/test/test_unit.py
+++ b/test/test_unit.py
@@ -41,6 +41,7 @@ def test_special_units_html():
     """Test special units: Don't put space before ° and %."""
     assertions = {
         "100%": "100%",
+        "100 %": "100%",
         "42,24°": "42,24°",
     }