diff --git a/scripts/dts/gen_dts_cmake.py b/scripts/dts/gen_dts_cmake.py
index 5dd4a8779d3..a8a2c3df611 100755
--- a/scripts/dts/gen_dts_cmake.py
+++ b/scripts/dts/gen_dts_cmake.py
@@ -134,10 +134,8 @@ def main():
                 cmake_prop = f'DT_PROP|{node.path}|{item}'
                 cmake_props.append(f'"{cmake_prop}" "{escape(cmake_value)}"')
 
-                if item == 'compatible':
-                    # compatibles is always an array
-                    for comp in node.props[item].val:
-                        compatible2paths[comp].append(node.path)
+        for comp in node.compats:
+            compatible2paths[comp].append(node.path)
 
         if node.regs is not None:
             cmake_props.append(f'"DT_REG|{node.path}|NUM" "{len(node.regs)}"')