diff --git a/cmake/admInstallDir.cmake b/cmake/admInstallDir.cmake
index 2c1c3e0..fb01fa9 100644
--- a/cmake/admInstallDir.cmake
+++ b/cmake/admInstallDir.cmake
@@ -16,13 +16,13 @@ ELSE(WIN32)
                 MESSAGE(STATUS "No install dir provided, using /usr/local")
         ENDIF(NOT AVIDEMUX_INSTALL_DIR )
         SET(AVIDEMUX_BIN_DIR ${AVIDEMUX_INSTALL_DIR}/bin)
-        IF(CMAKE_C_IMPLICIT_LINK_DIRECTORIES MATCHES "\\/lib64([; ]|$)")
-                SET(AVIDEMUX_RELATIVE_LIB_DIR lib64)
+        IF(CMAKE_C_IMPLICIT_LINK_DIRECTORIES MATCHES "\\/lib([; ]|$)")
+                SET(AVIDEMUX_RELATIVE_LIB_DIR lib)
         ELSEIF(CMAKE_C_IMPLICIT_LINK_DIRECTORIES MATCHES "\\/lib32([; ]|$)")
                 SET(AVIDEMUX_RELATIVE_LIB_DIR lib32)
-        ELSE(CMAKE_C_IMPLICIT_LINK_DIRECTORIES MATCHES "\\/lib64([; ]|$)")
+        ELSE(CMAKE_C_IMPLICIT_LINK_DIRECTORIES MATCHES "\\/lib([; ]|$)")
                 SET(AVIDEMUX_RELATIVE_LIB_DIR lib)
-        ENDIF(CMAKE_C_IMPLICIT_LINK_DIRECTORIES MATCHES "\\/lib64([; ]|$)")
+        ENDIF(CMAKE_C_IMPLICIT_LINK_DIRECTORIES MATCHES "\\/lib([; ]|$)")
         SET(AVIDEMUX_LIB_DIR ${AVIDEMUX_INSTALL_DIR}/${AVIDEMUX_RELATIVE_LIB_DIR})
 ENDIF(WIN32)
 SET(AVIDEMUX_INCLUDE_DIR ${AVIDEMUX_INSTALL_DIR}/include)