diff --git a/simd/i386/jsimd.c b/simd/i386/jsimd.c
index 0b5a410a..563949a0 100644
--- a/simd/i386/jsimd.c
+++ b/simd/i386/jsimd.c
@@ -1210,15 +1210,10 @@ jsimd_can_encode_mcu_AC_first_prepare(void)
     return 0;
   if (SIZEOF_SIZE_T != 4)
     return 0;
-  if (!(simd_support & JSIMD_SSE2))
-    return 0;
-#if defined(HAVE_BUILTIN_CTZL)
-  return 1;
-#elif defined(HAVE_BITSCANFORWARD)
-  return 1;
-#else
+  if (simd_support & JSIMD_SSE2)
+    return 1;
+
   return 0;
-#endif
 }
 
 GLOBAL(void)
@@ -1241,15 +1236,10 @@ jsimd_can_encode_mcu_AC_refine_prepare(void)
     return 0;
   if (SIZEOF_SIZE_T != 4)
     return 0;
-  if (!(simd_support & JSIMD_SSE2))
-    return 0;
-#if defined(HAVE_BUILTIN_CTZL)
-  return 1;
-#elif defined(HAVE_BITSCANFORWARD)
-  return 1;
-#else
+  if (simd_support & JSIMD_SSE2)
+    return 1;
+
   return 0;
-#endif
 }
 
 GLOBAL(int)
diff --git a/simd/x86_64/jsimd.c b/simd/x86_64/jsimd.c
index 79278754..1e5698b3 100644
--- a/simd/x86_64/jsimd.c
+++ b/simd/x86_64/jsimd.c
@@ -1033,15 +1033,10 @@ jsimd_can_encode_mcu_AC_first_prepare(void)
     return 0;
   if (SIZEOF_SIZE_T != 8)
     return 0;
-  if (!(simd_support & JSIMD_SSE2))
-    return 0;
-#if defined(HAVE_BUILTIN_CTZL)
-  return 1;
-#elif defined(HAVE_BITSCANFORWARD64)
-  return 1;
-#else
+  if (simd_support & JSIMD_SSE2)
+    return 1;
+
   return 0;
-#endif
 }
 
 GLOBAL(void)
@@ -1064,15 +1059,10 @@ jsimd_can_encode_mcu_AC_refine_prepare(void)
     return 0;
   if (SIZEOF_SIZE_T != 8)
     return 0;
-  if (!(simd_support & JSIMD_SSE2))
-    return 0;
-#if defined(HAVE_BUILTIN_CTZL)
-  return 1;
-#elif defined(HAVE_BITSCANFORWARD64)
-  return 1;
-#else
+  if (simd_support & JSIMD_SSE2)
+    return 1;
+
   return 0;
-#endif
 }
 
 GLOBAL(int)