diff --git a/sysc/bison-3.4.2/bison-3.4.2.sh b/sysc/bison-3.4.2/bison-3.4.2.sh
index d3299bb..564adeb 100755
--- a/sysc/bison-3.4.2/bison-3.4.2.sh
+++ b/sysc/bison-3.4.2/bison-3.4.2.sh
@@ -20,7 +20,9 @@ src_prepare() {
 }
 
 src_configure() {
-    ./configure --prefix="${PREFIX}" --disable-nls
+    ./configure --prefix="${PREFIX}" \
+        --libdir="${PREFIX}/lib/musl" \
+        --disable-nls
 }
 
 src_compile() {
diff --git a/sysc/flex-2.5.33/flex-2.5.33.sh b/sysc/flex-2.5.33/flex-2.5.33.sh
index 6e8f970..a84e269 100755
--- a/sysc/flex-2.5.33/flex-2.5.33.sh
+++ b/sysc/flex-2.5.33/flex-2.5.33.sh
@@ -17,6 +17,7 @@ src_prepare() {
 src_configure() {
     ./configure \
         --prefix="${PREFIX}" \
+        --libdir="${PREFIX}/lib/musl" \
         --program-suffix=-2.5.33
 }