diff --git a/configure.ac b/configure.ac
index 75296f23..67fb2b52 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,7 +9,6 @@ AC_CONFIG_MACRO_DIR([m4])
 AC_USE_SYSTEM_EXTENSIONS
 AC_PROG_CC
 AC_PROG_CXX
-AC_C_CONST
 LT_INIT
 
 PKG_PROG_PKG_CONFIG
diff --git a/libpainter b/libpainter
index 81f8237d..379b8fbf 160000
--- a/libpainter
+++ b/libpainter
@@ -1 +1 @@
-Subproject commit 81f8237dec6de1669b231aa847e221931c4d176f
+Subproject commit 379b8fbf40f309829364bf3414d721f9ba77766d
diff --git a/librfxcodec b/librfxcodec
index 429c1126..26e40b29 160000
--- a/librfxcodec
+++ b/librfxcodec
@@ -1 +1 @@
-Subproject commit 429c1126e04444511712d594e357ed4ed6f4ab5d
+Subproject commit 26e40b29d05877e926f977c4b40b2a44bbb07216