diff --git a/pkgs/development/libraries/alice-vision/3.1.0.nix b/pkgs/development/libraries/alice-vision/3.1.0.nix
index 648630d72691577..ff89fe219d4ef92 100644
--- a/pkgs/development/libraries/alice-vision/3.1.0.nix
+++ b/pkgs/development/libraries/alice-vision/3.1.0.nix
@@ -154,8 +154,9 @@ stdenv.mkDerivation rec {
         ALICEVISION_BUILD_DOC = false;
         ALICEVISION_BUILD_EXAMPLES = false;
         ALICEVISION_BUILD_SOFTWARE = true;
-        # enabled alignment led to wrong initialization of Vec2 variables
-        AV_EIGEN_MEMORY_ALIGNMENT = false;
+        # CCTag package does not support alignment yet, and this must be
+        # consistent between both packages
+        AV_EIGEN_MEMORY_ALIGNMENT = ! enableCctag;
 
         ALICEVISION_BUILD_TESTS = doCheck;