diff --git a/astronaut/astronaut b/astronaut/astronaut
index 95edf96..da36028 100755
--- a/astronaut/astronaut
+++ b/astronaut/astronaut
@@ -43,12 +43,15 @@ while getopts "h?s:b:i:cC" opt; do
             exit 0
             ;;
         s)
+            mkdir -p "$OPTARG"
             dir_source="$(realpath "$OPTARG")"
             ;;
         b)
+            mkdir -p "$OPTARG"
             dir_build="$(realpath "$OPTARG")"
             ;;
         i)
+            mkdir -p "$OPTARG"
             dir_install="$(realpath "$OPTARG")"
             ;;
         c)
diff --git a/astronaut/hello.sat b/astronaut/hello.sat
index 3bce414..2a69726 100644
--- a/astronaut/hello.sat
+++ b/astronaut/hello.sat
@@ -20,7 +20,7 @@ extract "$name-$version.tar.gz" \
 
 # Compilation instructions
 cd "$name-$version"
-./configure
+./configure --prefix=/usr
 make
 
 # Know if the user wants the package to be checked
diff --git a/tools/satellites/linux-api.sat b/tools/satellites/linux-api.sat
index 75cdff8..b5ed394 100644
--- a/tools/satellites/linux-api.sat
+++ b/tools/satellites/linux-api.sat
@@ -1,5 +1,5 @@
 name=linux
-version=3.17.3
+version=3.17.4
 
 dlextract "https://www.kernel.org/pub/$name/kernel/v3.x/$name-$version.tar.xz" \
           "d0e66347360aceb3cdb94f5d1d7880f2"
diff --git a/tools/satellites/perl.sat b/tools/satellites/perl.sat
index c125da2..01b75dc 100644
--- a/tools/satellites/perl.sat
+++ b/tools/satellites/perl.sat
@@ -9,6 +9,6 @@ cd "$name-$version"
 sh Configure -des -Dprefix=/tools -Dlibs=-lm
 make
 
-cp perl cpan/podlators/pod2man "$dir_install/tools/bin"
+cp perl "$dir_install/tools/bin"
 mkdir -p "$dir_install/tools/lib/perl5"
 cp -r lib "$dir_install/tools/lib/perl5/$version"