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diff --git a/_pages/documentation/learning_gem5/part1/extending_configs.md b/_pages/documentation/learning_gem5/part1/part1_6_extending_configs.md
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index 346b0cb..73223a2 100644
--- a/_pages/documentation/learning_gem5/part1/extending_configs.md
+++ b/_pages/documentation/learning_gem5/part1/part1_6_extending_configs.md
@@ -2,7 +2,7 @@
 layout: documentation
 title: Extending gem5 to run ARM binaries 
 doc: Learning gem5
-parent: pt1
+parent: part1
 permalink: /documentation/learning_gem5/part1/extending_configs
 author: Julian T. Angeles 
 ---
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