diff --git a/tests/acceptance/test_main_health.py b/tests/acceptance/test_main_health.py
index 6a027af..3a86d89 100644
--- a/tests/acceptance/test_main_health.py
+++ b/tests/acceptance/test_main_health.py
@@ -137,16 +137,22 @@ def _extract_content_units(parsed_data: dict) -> dict:
 
     for sec in sections:
         name = sec.get("source", "")
-        if _is_functional_section(name) and _has_section_content(sec):
+        is_func = _is_functional_section(name) and _has_section_content(sec)
+        if is_func:
             functional_sections.append({
                 "name": name,
                 "number": _section_number(name),
             })
 
-        for block in sec.get("blocks", []):
-            if block.get("type") == "table":
-                rows = block.get("rows", [])
-                total_table_rows += len(rows)
+        # Only count table rows from functional sections
+        # (non-functional sections like changelog, glossary, references
+        #  cannot be covered by function_units — counting them inflates
+        #  the denominator and yields misleadingly low coverage.)
+        if is_func:
+            for block in sec.get("blocks", []):
+                if block.get("type") == "table":
+                    rows = block.get("rows", [])
+                    total_table_rows += len(rows)
 
     # Diagram-type images from image_analysis
     diagram_rids: list[str] = []