diff --git a/src/core/formulations.jl b/src/core/formulations.jl
index 1b6ddb109..2f98f365d 100644
--- a/src/core/formulations.jl
+++ b/src/core/formulations.jl
@@ -167,7 +167,7 @@ Approximation to represent inter-area flow with each area represented as a singl
 """
 struct AreaBalancePowerModel <: PM.AbstractActivePowerModel end
 """
-Linear active power approximation using the power transfer distribution factor [PTDF](https://nrel-sienna.github.io/PowerNetworkMatrices.jl/stable/tutorials/tutorial_PTDF_matrix/) matrix. Balacing areas independently.
+Linear active power approximation using the power transfer distribution factor [PTDF](https://nrel-sienna.github.io/PowerNetworkMatrices.jl/stable/tutorials/tutorial_PTDF_matrix/) matrix. Balancing areas independently.
 """
 struct AreaPTDFPowerModel <: AbstractPTDFModel end