diff --git a/docs/installation.md b/docs/installation.md
index 7a7719fc0..4de05c121 100644
--- a/docs/installation.md
+++ b/docs/installation.md
@@ -267,6 +267,7 @@ Official webpage: https://mrjbq7.github.io/ta-lib/install.html
 wget http://prdownloads.sourceforge.net/ta-lib/ta-lib-0.4.0-src.tar.gz
 tar xvzf ta-lib-0.4.0-src.tar.gz
 cd ta-lib
+sed -i "s|0.00000001|0.000000000000000001 |g" src/ta_func/ta_utility.h
 ./configure --prefix=/usr
 make
 make install
diff --git a/install_ta-lib.sh b/install_ta-lib.sh
index d5d7cf03e..1639bd3a2 100755
--- a/install_ta-lib.sh
+++ b/install_ta-lib.sh
@@ -1,11 +1,7 @@
 if [ ! -f "ta-lib/CHANGELOG.TXT" ]; then
   tar zxvf ta-lib-0.4.0-src.tar.gz
-  cd ta-lib && \
-  sed -i "s|0.00000001|0.000000000000000001 |g" src/ta_func/ta_utility.h && \
-  ./configure && make && sudo make install && cd ..
+  cd ta-lib && sed -i "s|0.00000001|0.000000000000000001 |g" src/ta_func/ta_utility.h && ./configure && make && sudo make install && cd ..
 else
   echo "TA-lib already installed, skipping download and build."
-  cd ta-lib && \
-  sed -i "s|0.00000001|0.000000000000000001 |g" src/ta_func/ta_utility.h && \
-  sudo make install && cd ..
+  cd ta-lib && sed -i "s|0.00000001|0.000000000000000001 |g" src/ta_func/ta_utility.h && sudo make install && cd ..
 fi