diff --git a/opencv/CMakeLists.txt b/opencv/CMakeLists.txt
index d9299321..0b92bff5 100644
--- a/opencv/CMakeLists.txt
+++ b/opencv/CMakeLists.txt
@@ -38,7 +38,7 @@ if (ENABLE_OPENCV)
     -DBIN_DIR=${BIN_DIR}
     -DLIB_DIR=${LIB_DIR}
     -DCMAKE_INSTALL_LIBDIR:PATH=${LIB_DIR}
-    -DOPENCV_INSTALL_BINARIES_PREFIX=""
+    -DOPENCV_INSTALL_BINARIES_PREFIX=\\\"\\\"
     -DOPENCV_CONFIG_INSTALL_PATH=${LIB_DIR}/cmake/opencv4
     -DOPENCV_SETUPVARS_INSTALL_PATH=${BIN_DIR}
     -DOPENCV_SKIP_CMAKE_ROOT_CONFIG=ON
diff --git a/png/CMakeLists.txt b/png/CMakeLists.txt
index 18d34992..532fb32e 100644
--- a/png/CMakeLists.txt
+++ b/png/CMakeLists.txt
@@ -38,7 +38,7 @@ if (ENABLE_PNG)
     -DZLIB_ROOT=$<$<BOOL:${ZLIB_TARGET}>:${CMAKE_BUNDLE_INSTALL_PREFIX}>
     -DPNG_LIB_NAME=${PNG_LIB_NAME}
     -DPNG_NO_DEBUG_POSTFIX=ON
-    -DPNG_DEBUG_POSTFIX=\"\"
+    -DPNG_DEBUG_POSTFIX=\\\"\\\"
     -DPNG_PREFIX=brl_
     -DPNG_STATIC=${BUILD_STATIC_LIBS}
     -DPNG_TESTS=OFF