diff --git a/src/other/ext/png.cmake b/src/other/ext/png.cmake
index 9d52120929..2885101b43 100644
--- a/src/other/ext/png.cmake
+++ b/src/other/ext/png.cmake
@@ -89,6 +89,7 @@ if (BRLCAD_PNG_BUILD)
     -DCMAKE_INSTALL_RPATH_USE_LINK_PATH=${CMAKE_INSTALL_RPATH_USE_LINK_PATH}
     -DCMAKE_SKIP_BUILD_RPATH=${CMAKE_SKIP_BUILD_RPATH}
     -DPNG_LIB_NAME=${PNG_LIB_NAME}
+    -DPNG_NO_DEBUG_POSTFIX=ON
     -DPNG_PREFIX=brl_
     -DPNG_STATIC=${BUILD_STATIC_LIBS}
     -DPNG_TESTS=OFF
diff --git a/src/other/ext/png/CMakeLists.txt b/src/other/ext/png/CMakeLists.txt
index 2db77f6526..8fbe2223fb 100644
--- a/src/other/ext/png/CMakeLists.txt
+++ b/src/other/ext/png/CMakeLists.txt
@@ -224,7 +224,9 @@ endif(PNG_HARDWARE_OPTIMIZATIONS)
 set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR})
 
 # Distinguish between debug and release builds.
-set(CMAKE_DEBUG_POSTFIX "d")
+if(NOT PNG_NO_DEBUG_POSTFIX)
+	set(CMAKE_DEBUG_POSTFIX "d")
+endif(NOT PNG_NO_DEBUG_POSTFIX)
 
 include(CheckCSourceCompiles)
 option(ld-version-script "Enable linker version script" ON)