diff --git a/skel/make.sh b/skel/make.sh
index 3743de9..d32b5e3 100755
--- a/skel/make.sh
+++ b/skel/make.sh
@@ -77,13 +77,13 @@ make_monolithic() {
     if [ "$2" == "C" ]
     then
         HASHLINE=1
-	VERDEFINE=1
+        VERDEFINE=1
     elif [ "$2" == "none" ]
     then
-    	HASHLINE=0 # dummy command
+            HASHLINE=0 # dummy command
     else
-    	print_failure "make_monolithic() called with unknown format $2"
-	return 1
+            print_failure "make_monolithic() called with unknown format $2"
+        return 1
     fi
 
     echo " Building monolithic file '${MONOLITHIC_OUT}'..."
@@ -100,28 +100,28 @@ make_monolithic() {
         if [ "${FILE}" -nt ${MONOLITHIC_OUT} ]
         then
             MODIFIED=1
-	    break
+            break
         fi
     done
 
     if [ ${MODIFIED} -ne 0 ]
     then
-	do_cmd mkdir -p $(dirname ${MONOLITHIC_OUT})
+        do_cmd mkdir -p $(dirname ${MONOLITHIC_OUT})
         do_cmd rm -f ${MONOLITHIC_OUT} || exit 1
-	
-	if [ ${VERDEFINE} -ne 0 ]
-	then
-	    do_cmd_redir ${MONOLITHIC_OUT} echo "#define VERSION \"${VERSION}\"" || return 1
-	    do_cmd_redir ${MONOLITHIC_OUT} echo "#define VERMAJOR ${VERMAJOR}" || return 1
-	    do_cmd_redir ${MONOLITHIC_OUT} echo "#define VERMINOR ${VERMINOR}" || return 1
-	    do_cmd_redir ${MONOLITHIC_OUT} echo "#define VERMICRO ${VERMICRO}" || return 1
-	    do_cmd_redir ${MONOLITHIC_OUT} echo "#define VEREXTRA \"${VEREXTRA}\"" || return 1
-	fi
+        
+        if [ ${VERDEFINE} -ne 0 ]
+        then
+            do_cmd_redir ${MONOLITHIC_OUT} echo "#define VERSION \"${VERSION}\"" || return 1
+            do_cmd_redir ${MONOLITHIC_OUT} echo "#define VERMAJOR ${VERMAJOR}" || return 1
+            do_cmd_redir ${MONOLITHIC_OUT} echo "#define VERMINOR ${VERMINOR}" || return 1
+            do_cmd_redir ${MONOLITHIC_OUT} echo "#define VERMICRO ${VERMICRO}" || return 1
+            do_cmd_redir ${MONOLITHIC_OUT} echo "#define VEREXTRA \"${VEREXTRA}\"" || return 1
+        fi
 
         for FILE in ${MONOLITHIC_SOURCE}
         do
-	    if [ ${HASHLINE} -ne 0 ]
-	    then
+            if [ ${HASHLINE} -ne 0 ]
+            then
                 do_cmd_redir ${MONOLITHIC_OUT} echo "#line 1 \"${FILE}\"" || return 1
             fi
             do_cmd_redir ${MONOLITHIC_OUT} cat "${FILE}" || return 1
@@ -260,10 +260,10 @@ do
         for dir in ${OUTPUT_DIRS}
         do
             [ -e "${dir}" ] && do_cmd \
-	        find "${dir}" \( -type f -o -type l \) -exec rm {} \;
-	    [ $? -ne 0 ] && exit $?
-	done
-	print_success "Done"
+                find "${dir}" \( -type f -o -type l \) -exec rm {} \;
+            [ $? -ne 0 ] && exit $?
+        done
+        print_success "Done"
     ;;
 
     # bad Kdevelop! bad!
@@ -273,7 +273,7 @@ do
     ;;
 
     *)
-	build_target ${func} || exit 1
+        build_target ${func} || exit 1
     ;;
     esac
 done
diff --git a/skel/src/docs/build.docs b/skel/src/docs/build.docs
index 1309d0e..c860a91 100644
--- a/skel/src/docs/build.docs
+++ b/skel/src/docs/build.docs
@@ -15,23 +15,23 @@ then
     then
         do_cmd cp src/docs/Doxyfile.in ${DOXYFILE} || return 1
         echo "INPUT = ${MONOLITHIC_DOC}" >> ${DOXYFILE}
-	echo "PROJECT_NUMBER = ${VERSION}" >> ${DOXYFILE}
+        echo "PROJECT_NUMBER = ${VERSION}" >> ${DOXYFILE}
     fi
 
     MODIFIED=0
     for file in ${MONOLITHIC_DOC}
     do
         if [ ${file} -nt html/index.html ]
-	then
-	    MODIFIED=1
-	    break
-	fi
+        then
+            MODIFIED=1
+            break
+        fi
     done
 
     if [ ${MODIFIED} -ne 0 ]
     then
         do_cmd doxygen ${DOXYFILE} || return 1
-	print_success "Documentation built"
+        print_success "Documentation built"
     else
         print_success "Documentation is up to date"
     fi
diff --git a/skel/src/tests/build.tests b/skel/src/tests/build.tests
index 62b209a..9eb7ed6 100644
--- a/skel/src/tests/build.tests
+++ b/skel/src/tests/build.tests
@@ -13,23 +13,23 @@ then
     for SRC in src/tests/*.cpp
     do
         TEST="obj/tests/$(basename ${SRC} | sed -e 's,.cpp$,,')"
-	MODIFIED=0
-	for file in ${LIBCPP} ${SRC}
-	do
-	    if [ ${file} -nt ${TEST} ]
-	    then
-	        MODIFIED=1
-		break
-	    fi
-	done
+        MODIFIED=0
+        for file in ${LIBCPP} ${SRC}
+        do
+            if [ ${file} -nt ${TEST} ]
+            then
+                MODIFIED=1
+                break
+            fi
+        done
 
-	if [ ${MODIFIED} -ne 0 ]
-	then
+        if [ ${MODIFIED} -ne 0 ]
+        then
             do_cmd ${CXX} -Iobj ${CFLAGS} -o ${TEST} ${SRC} ${LIBS} || return 1
-	    print_success "Built ${TEST}"
-	else
-	    print_success "${TEST} is up to date"
-	fi
+            print_success "Built ${TEST}"
+        else
+            print_success "${TEST} is up to date"
+        fi
     done
 
     print_success "All tests built"