diff --git a/optimize.sh b/optimize.sh
index ff4b06e..69e2a95 100755
--- a/optimize.sh
+++ b/optimize.sh
@@ -7,7 +7,7 @@
 # Author:        VirtuBox
 # License:       M.I.T
 # ----------------------------------------------------------------------------
-# Version 1.1 - 2019-07-12
+# Version 1.1 - 2019-09-24
 # ----------------------------------------------------------------------------
 
 CSI='\033['
diff --git a/scripts/install-optipng.sh b/scripts/install-optipng.sh
index be8d60f..d1d6426 100644
--- a/scripts/install-optipng.sh
+++ b/scripts/install-optipng.sh
@@ -24,7 +24,8 @@ curl -sL "$OPTIPNGLATEST" | tar -I pigz -xf -
 cd optipng-* || exit 1
 
 # configure and compile optipng
-./configure --prefix=/usr
+./configure
 make -j "$(nproc)"
 strip --strip-unneeded /usr/local/src/optipng-*/src/optipng/optipng
-make install
\ No newline at end of file
+make install
+ldconfig
\ No newline at end of file
diff --git a/scripts/install-webp.sh b/scripts/install-webp.sh
index e4eee37..31410c8 100644
--- a/scripts/install-webp.sh
+++ b/scripts/install-webp.sh
@@ -24,7 +24,8 @@ curl -sL "https:$LATEST_WEBP" | tar -I pigz -xf -
 cd libwebp-* || exit
 
 # configure libwebp and launch compilation
-./configure --prefix=/usr
+./configure
 make -j "$(nproc)"
 strip --strip-unneeded /usr/local/src/libwebp-*/examples/.libs/{cwebp,dwebp}
 make install
+ldconfig