diff --git a/build.sh b/build.sh
index 5f6116f..d632aee 100755
--- a/build.sh
+++ b/build.sh
@@ -269,7 +269,6 @@ build_project() {
     else
         # Build both architectures
         print_status "Building OTP project for x86_64..."
-        make clean
         make CC=gcc ARCH=x86_64
         if [ $? -eq 0 ]; then
             print_success "x86_64 build completed successfully"
@@ -279,7 +278,8 @@ build_project() {
         fi
         
         print_status "Building OTP project for ARM64/AArch64..."
-        make clean
+        # Clean only object files, not the x86_64 binary
+        rm -f src/*.o
         make CC=aarch64-linux-gnu-gcc ARCH=arm64
         if [ $? -eq 0 ]; then
             print_success "ARM64/AArch64 build completed successfully"