diff --git a/vs/bitpack_avx2.c b/vs/bitpack_avx2.c
index 16c6330..b6ca949 100644
--- a/vs/bitpack_avx2.c
+++ b/vs/bitpack_avx2.c
@@ -1,2 +1 @@
-#define AVX2_ON
 #include "bitpack.c"
diff --git a/vs/bitpack_sse.c b/vs/bitpack_sse.c
index 0d521db..b6ca949 100644
--- a/vs/bitpack_sse.c
+++ b/vs/bitpack_sse.c
@@ -1,2 +1 @@
-#define SSE2_ON
 #include "bitpack.c"
diff --git a/vs/bitunpack_avx2.c b/vs/bitunpack_avx2.c
index 26d1115..734289a 100644
--- a/vs/bitunpack_avx2.c
+++ b/vs/bitunpack_avx2.c
@@ -1,2 +1 @@
-#define AVX2_ON
 #include "bitunpack.c"
diff --git a/vs/bitunpack_sse.c b/vs/bitunpack_sse.c
index fe0f4de..734289a 100644
--- a/vs/bitunpack_sse.c
+++ b/vs/bitunpack_sse.c
@@ -1,2 +1 @@
-#define SSE2_ON
 #include "bitunpack.c"
diff --git a/vs/transpose_avx2.c b/vs/transpose_avx2.c
index f7948d8..328944f 100644
--- a/vs/transpose_avx2.c
+++ b/vs/transpose_avx2.c
@@ -1,2 +1 @@
-#define AVX2_ON
 #include "transpose.c"
diff --git a/vs/transpose_sse.c b/vs/transpose_sse.c
index 84c18de..328944f 100644
--- a/vs/transpose_sse.c
+++ b/vs/transpose_sse.c
@@ -1,2 +1 @@
-#define SSE2_ON
 #include "transpose.c"
diff --git a/vs/vp4c_avx2.c b/vs/vp4c_avx2.c
index db5c4ac..f6d8d10 100644
--- a/vs/vp4c_avx2.c
+++ b/vs/vp4c_avx2.c
@@ -1,2 +1 @@
-#define AVX2_ON
 #include "vp4c.c"
diff --git a/vs/vp4c_sse.c b/vs/vp4c_sse.c
index 5bdbdd5..f6d8d10 100644
--- a/vs/vp4c_sse.c
+++ b/vs/vp4c_sse.c
@@ -1,2 +1 @@
-#define SSE2_ON
 #include "vp4c.c"
diff --git a/vs/vp4d_avx2.c b/vs/vp4d_avx2.c
index b454a42..ab5b510 100644
--- a/vs/vp4d_avx2.c
+++ b/vs/vp4d_avx2.c
@@ -1,2 +1 @@
-#define AVX2_ON
 #include "vp4d.c"
diff --git a/vs/vp4d_sse.c b/vs/vp4d_sse.c
index c8cc159..ab5b510 100644
--- a/vs/vp4d_sse.c
+++ b/vs/vp4d_sse.c
@@ -1,2 +1 @@
-#define SSE2_ON
 #include "vp4d.c"