diff --git a/ext/opcache/config.m4 b/ext/opcache/config.m4
index 857708783efbc..5fe97c532206e 100644
--- a/ext/opcache/config.m4
+++ b/ext/opcache/config.m4
@@ -35,7 +35,7 @@ if test "$PHP_OPCACHE" != "no"; then
 
   if test "$PHP_OPCACHE_JIT" = "yes"; then
     case $host_cpu in
-      i[[34567]]86*|x86*|aarch64)
+      i[[34567]]86*|x86*|aarch64|amd64)
         ;;
       *)
         AC_MSG_WARN([JIT not supported by host architecture])
@@ -59,7 +59,7 @@ if test "$PHP_OPCACHE" != "no"; then
         DASM_FLAGS="-D X64APPLE=1 -D X64=1"
         DASM_ARCH="x86"
         ;;
-      x86_64*)
+      *x86_64*|amd64-*-freebsd*)
         IR_TARGET=IR_TARGET_X64
         DASM_FLAGS="-D X64=1"
         DASM_ARCH="x86"