diff --git a/.travis.yml b/.travis.yml
index 616db9a..55c6227 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -22,11 +22,11 @@ matrix:
 
 
 install:
-  - bash ci/install.sh
+  - ci/install.sh
   - export PATH="$PATH:$PWD/gcc/bin"
 
 script:
-  - bash ci/script.sh
+  - ci/script.sh
 
 
 cache: cargo
diff --git a/ci/install.sh b/ci/install.sh
old mode 100644
new mode 100755
index fa98970..153fbd4
--- a/ci/install.sh
+++ b/ci/install.sh
@@ -1,12 +1,8 @@
+#!/usr/bin/env bash
+
 set -euxo pipefail
 
-main() {
-    if [ $TARGET != x86_64-unknown-linux-gnu ]; then
-        rustup target add $TARGET
-    fi
+rustup target add $TARGET
 
-    mkdir gcc
-    curl -L https://static.dev.sifive.com/dev-tools/riscv64-unknown-elf-gcc-8.1.0-2018.12.0-x86_64-linux-ubuntu14.tar.gz | tar --strip-components=1 -C gcc -xz
-}
-
-main
+mkdir gcc
+curl -L https://static.dev.sifive.com/dev-tools/riscv64-unknown-elf-gcc-8.1.0-2018.12.0-x86_64-linux-ubuntu14.tar.gz | tar --strip-components=1 -C gcc -xz
diff --git a/ci/script.sh b/ci/script.sh
old mode 100644
new mode 100755
index dc0be46..89f4f19
--- a/ci/script.sh
+++ b/ci/script.sh
@@ -1,15 +1,13 @@
+#!/usr/bin/env bash
+
 set -euxo pipefail
 
-main() {
-    cargo check --target $TARGET
+cargo check --target $TARGET
 
-    if [ $TRAVIS_RUST_VERSION = nightly ]; then
-        cargo check --target $TARGET --features inline-asm
-    fi
+if [ $TRAVIS_RUST_VERSION = nightly ]; then
+    cargo check --target $TARGET --features inline-asm
+fi
 
-    if [ $TARGET = x86_64-unknown-linux-gnu ]; then
-        ./check-blobs.sh
-    fi
-}
-
-main
+if [ $TARGET = x86_64-unknown-linux-gnu ]; then
+    ./check-blobs.sh
+fi