diff --git a/mk/config.mk b/mk/config.mk
index 65dd31a..5f6eace 100644
--- a/mk/config.mk
+++ b/mk/config.mk
@@ -6,12 +6,7 @@ INSTALLER_FLAGS?=--cookbook=cookbook
 ## Enabled to use binary prefix (much faster)
 PREFIX_BINARY?=1
 ## Enabled to build custom rustc
-ifeq ($(ARCH),aarch64)
-	# aarch64 requires rustc prefix
-	PREFIX_RUSTC?=1
-else
-	PREFIX_RUSTC?=0
-endif
+PREFIX_RUSTC?=1
 ## Filesystem size in MB (256 is the default)
 FILESYSTEM_SIZE?=256
 
diff --git a/mk/prefix.mk b/mk/prefix.mk
index d884baf..5b7be9f 100644
--- a/mk/prefix.mk
+++ b/mk/prefix.mk
@@ -6,7 +6,11 @@ PREFIX_INSTALL=$(PREFIX)/relibc-install
 
 ifeq ($(PREFIX_RUSTC),1)
 	PREFIX_BASE_INSTALL=$(PREFIX)/rust-freestanding-install
-	export RUSTUP_TOOLCHAIN=$(ROOT)/$(PREFIX)/rust-freestanding-install
+	ifeq ($(PREFIX_BINARY),1)
+		export RUSTUP_TOOLCHAIN=$(ROOT)/$(PREFIX)/gcc-install
+	else
+		export RUSTUP_TOOLCHAIN=$(ROOT)/$(PREFIX)/rust-freestanding-install
+	endif
 endif
 
 PREFIX_BASE_PATH=$(ROOT)/$(PREFIX_BASE_INSTALL)/bin