diff --git a/.gitattributes b/.gitattributes
index 68911353139..8f5bd701d27 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -17,7 +17,6 @@ Algebraic_foundations/examples/Algebraic_foundations/interoperable.cpp -text
 Algebraic_foundations/maintainer -text
 Algebraic_kernel_d/benchmark/Algebraic_kernel_d/Algebraic_curve_kernel_2.cpp -text
 Algebraic_kernel_d/benchmark/Algebraic_kernel_d/Algebraic_kernel_d_1.cpp -text
-Algebraic_kernel_d/benchmark/Algebraic_kernel_d/Curve_kernel_2_data/.nix -text
 Algebraic_kernel_d/benchmark/Algebraic_kernel_d/Curve_kernel_2_data/projected_arr_2_2_8_2.nix -text
 Algebraic_kernel_d/benchmark/Algebraic_kernel_d/Curve_kernel_2_data/projected_arr_2_2_8_3.nix -text
 Algebraic_kernel_d/benchmark/Algebraic_kernel_d/Curve_kernel_2_data/projected_arr_2_2_8_4.nix -text
diff --git a/Algebraic_kernel_d/benchmark/Algebraic_kernel_d/Curve_kernel_2_data/.nix b/Algebraic_kernel_d/benchmark/Algebraic_kernel_d/Curve_kernel_2_data/.nix
deleted file mode 100755
index d96255a1df3..00000000000
--- a/Algebraic_kernel_d/benchmark/Algebraic_kernel_d/Curve_kernel_2_data/.nix
+++ /dev/null
@@ -1,4 +0,0 @@
-3 
-P[2(0,P[2(0,774540)(1,-1286064)(2,-1373112)])(1,P[1(0,6252948)(1,5893992)])(2,P[0(0,2153619)])]
-P[2(0,P[2(0,2039144)(1,513560)(2,3362042)])(1,P[1(0,-519480)(1,1230324)])(2,P[0(0,-515558)])]
-P[4(0,P[4(0,122939616)(1,-91640292)(2,173646463)(3,-179927200)(4,-9178541)])(1,P[3(0,160345888)(1,500325824)(2,424485175)(3,496786669)])(2,P[2(0,46292740)(1,229116949)(2,314088489)])(3,P[1(0,1018264)(1,2301177)])(4,P[0(0,37498)])]