diff --git a/README.md b/README.md
index 2fcf77ef..521ee2d1 100644
--- a/README.md
+++ b/README.md
@@ -68,7 +68,7 @@ Despite Windows support [is not yet 100% complete](https://github.com/evilsocket
 
 ## Cross Compilation
 
-As an example, let's cross compile bettercap for ARM (requires `gcc-arm-linux-gnueabi`, `byacc` and `flex` packages).
+As an example, let's cross compile bettercap for ARM (requires `gcc-arm-linux-gnueabi`, `yacc` and `flex` packages).
 
 **Step 1**: download and cross compile libpcap-1.8.1 for ARM (adjust `PCAPV` to use a different libpcap version):
 
diff --git a/build.sh b/build.sh
index 4d30f1c2..2429f451 100755
--- a/build.sh
+++ b/build.sh
@@ -35,6 +35,8 @@ xcompile_pcap() {
     ARCH=$1
 
     bin_dep 'make'
+    bin_dep 'yacc'
+    bin_dep 'flex'
     bin_dep "$ARCH-linux-gnueabi-gcc"
 
     echo "@ Cross compiling libpcap for $ARCH ..."