diff --git a/library_builders.sh b/library_builders.sh
index 10770970..65783504 100644
--- a/library_builders.sh
+++ b/library_builders.sh
@@ -234,7 +234,7 @@ function build_openjpeg {
     fi
     local out_dir=$(fetch_unpack https://github.com/uclouvain/openjpeg/archive/${archive_prefix}${OPENJPEG_VERSION}.tar.gz)
     (cd $out_dir \
-        && $cmake -DCMAKE_INSTALL_PREFIX=$BUILD_PREFIX -DCMAKE_INSTALL_NAME_DIR=$BUILD_PREFIX/lib . \
+        && $cmake -DCMAKE_INSTALL_PREFIX=$BUILD_PREFIX -DCMAKE_INSTALL_LIBDIR=$BUILD_PREFIX/lib -DCMAKE_INSTALL_NAME_DIR=$BUILD_PREFIX/lib . \
         && make install)
     touch openjpeg-stamp
 }
@@ -342,7 +342,7 @@ function build_blosc {
     local cmake=$(get_modern_cmake)
     fetch_unpack https://github.com/Blosc/c-blosc/archive/v${BLOSC_VERSION}.tar.gz
     (cd c-blosc-${BLOSC_VERSION} \
-        && $cmake -DCMAKE_INSTALL_PREFIX=$BUILD_PREFIX -DCMAKE_INSTALL_NAME_DIR=$BUILD_PREFIX/lib . \
+        && $cmake -DCMAKE_INSTALL_PREFIX=$BUILD_PREFIX -DCMAKE_INSTALL_LIBDIR=$BUILD_PREFIX/lib -DCMAKE_INSTALL_NAME_DIR=$BUILD_PREFIX/lib . \
         && make install)
     touch blosc-stamp
 }