diff --git a/README.md b/README.md
index 0553587..d8b368b 100644
--- a/README.md
+++ b/README.md
@@ -58,7 +58,6 @@ AmigaOS specific documents:
 You have to have following packages installed in your system:
 
  * GNU autoconf
- * GNU flex 2.5.x
  * GNU gcc 4.x **32-bit version!**
  * GNU make 3.x
  * lha
diff --git a/archives/fetch.sh b/archives/fetch.sh
index 49bdbac..ac0b268 100755
--- a/archives/fetch.sh
+++ b/archives/fetch.sh
@@ -34,6 +34,10 @@ download "ftp://ftp.gnu.org/gnu/gcc/gcc-4.5.0/gcc-g++-4.5.0.tar.gz"
 download "ftp://ftp.gnu.org/gnu/binutils/binutils-2.9.1.tar.gz"
 download "ftp://ftp.gnu.org/gnu/binutils/binutils-2.14.tar.gz"
 
+download \
+  "http://sourceforge.net/projects/flex/files/flex/2.5.4.a/flex-2.5.4a.tar.gz/download" \
+  "flex-2.5.4.tar.gz"
+
 download \
   "http://github.com/cahirwpz/libnix/archive/master.zip" \
   "libnix-2.2.zip"
diff --git a/bootstrap.conf b/bootstrap.conf
index ba42d97..945eeec 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -50,6 +50,9 @@ readonly M4="m4-1.4.17"
 readonly M4_SRC="${M4}.tar.gz"
 
 # Needed by GCC 2.95.3 and 3.4.6
+readonly FLEX="flex-2.5.4"
+readonly FLEX_SRC="${FLEX}.tar.gz"
+
 readonly BISON="bison-1.35"
 readonly BISON_SRC="${BISON}.tar.gz"
 
diff --git a/bootstrap.sh b/bootstrap.sh
index e6f1473..4d85fdd 100755
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -148,6 +148,7 @@ function unpack_sources {
   popd
 
   unpack_clean "${TEXINFO}" "${TEXINFO_SRC}"
+  unpack_clean "${FLEX}" "${FLEX_SRC}"
   unpack_clean "${BISON}" "${BISON_SRC}"
   unpack_clean "${GAWK}" "${GAWK_SRC}"
   unpack_clean "${M4}" "${M4_SRC}"
@@ -198,6 +199,14 @@ function build_tools {
   popd
 
   if compare_version "${GCC_VER}" "le" "3.4.6"; then
+    mkdir_empty "${FLEX}"
+    pushd "${FLEX}"
+    "${SOURCES}/${FLEX}/configure" \
+      --prefix="${HOST_DIR}"
+    ${MAKE}
+    make install
+    popd
+
     mkdir_empty "${BISON}"
     pushd "${BISON}"
     "${SOURCES}/${BISON}/configure" \