diff --git a/gen_headers_arm64_auto.bp b/gen_headers_arm64_auto.bp
index f63c31b8d3a2..38f867708186 100644
--- a/gen_headers_arm64_auto.bp
+++ b/gen_headers_arm64_auto.bp
@@ -1047,10 +1047,7 @@ genrule {
 
 genrule {
     name: "qti_generate_kernel_headers_arm64",
-    tools: [
-	"headers_install.sh",
-	"unifdef",
-	],
+    tools: ["headers_install.sh"],
     tool_files: [
         "kernel_headers.py",
     ],
@@ -1072,7 +1069,6 @@ genrule {
         "--new_gen_headers_bp $(location :qti_generate_gen_headers_arm64) " +
         "--version_makefile $(location Makefile) " +
         "--headers_install $(location headers_install.sh) " +
-	"--unifdef $(location unifdef) " +
         "--include_uapi $(locations include/uapi/**/*.h)",
     out: ["linux/version.h"] + gen_headers_out_arm64,
 }
diff --git a/gen_headers_arm_auto.bp b/gen_headers_arm_auto.bp
index 5dd2e0cdf017..6ac354adfdd5 100644
--- a/gen_headers_arm_auto.bp
+++ b/gen_headers_arm_auto.bp
@@ -1051,10 +1051,7 @@ genrule {
 
 genrule {
     name: "qti_generate_kernel_headers_arm",
-    tools: [
-	"headers_install.sh",
-	"unifdef",
-	],
+    tools: ["headers_install.sh"],
     tool_files: [
         "kernel_headers.py",
         "arch/arm/tools/syscallhdr.sh",
@@ -1079,7 +1076,6 @@ genrule {
         "--arch_syscall_tool $(location arch/arm/tools/syscallhdr.sh) " +
         "--arch_syscall_tbl $(location arch/arm/tools/syscall.tbl) " +
         "--headers_install $(location headers_install.sh) " +
-	"--unifdef $(location unifdef) " +
         "--include_uapi $(locations include/uapi/**/*.h)",
     out: ["linux/version.h"] + gen_headers_out_arm,
 }