diff --git a/mkdocs.yml b/mkdocs.yml
index b602f4e4c63fda1d14d88c9939330776d1526a10..3931d956144c8cbfddb60e776c84f74592717860 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -208,7 +208,7 @@ nav:                                      # Customizes the main navigation struc
               - initial_sizing/functions.md
           - Fuselage Design: 
             - Introduction: documentation/sizing/fuselage_design/index.md
-            - Getting Started: documentation/sizing/fuselage_design/getting-started.md
+            - Getting Started: documentation/sizing/fuselage_design/getting_started.md
             - Design Method: documentation/sizing/fuselage_design/design_method.md
             - Run your First Design: documentation/sizing/fuselage_design/run_your_first_design.md
             - Software Architecture: documentation/sizing/fuselage_design/software_architecture.md
@@ -258,7 +258,7 @@ nav:                                      # Customizes the main navigation struc
               - propulsion_design/functions.md
           - Landing Gear Design: 
             - Introduction: documentation/sizing/landing_gear_design/index.md
-            - Getting Started: documentation/sizing/landing_gear_design/getting-started.md
+            - Getting Started: documentation/sizing/landing_gear_design/getting_started.md
             - Design Method: documentation/sizing/landing_gear_design/design_method.md
             - Run your First Design: documentation/sizing/landing_gear_design/run_your_first_design.md
             - Software Architecture: documentation/sizing/landing_gear_design/software_architecture.md
@@ -282,7 +282,7 @@ nav:                                      # Customizes the main navigation struc
             # - API Reference: # TODO define for Python
           - Cost Estimation:
             - Introduction: documentation/analysis/cost_estimation/index.md
-            - Getting Started: documentation/analysis/cost_estimation/getting-started.md
+            - Getting Started: documentation/analysis/cost_estimation/getting_started.md
             - Methods: documentation/analysis/cost_estimation/operating_cost_method.md
             - Run your First Estimation: documentation/analysis/cost_estimation/run_your_first_cost_estimation.md
             # - API Reference: # TODO define for Python