diff --git a/src/tilingutils.jl b/src/tilingutils.jl
index 7eeab9a0..0f902461 100644
--- a/src/tilingutils.jl
+++ b/src/tilingutils.jl
@@ -494,7 +494,7 @@ function impose_minima(
     I::AbstractArray{T}, BW::AbstractMatrix{Bool}
 ) where {T<:AbstractFloat}
     # compute shift
-    b, a = extrema(I)
+    a, b = extrema(I)
     rng = b - a
     h = rng == 0 ? 0.1 : rng / 1000