diff --git a/configure.ac b/configure.ac
index 25a574d99..fd2cdec39 100644
--- a/configure.ac
+++ b/configure.ac
@@ -935,8 +935,8 @@ then
                 AJA_CXXFLAGS="-DAJAMac -DAJA_MAC"
                 AJA_LIB="-lajantv2"
         fi
-        AJA_CAP_OBJ="src/aja_common.o src/video_capture/aja.o"
-        AJA_DISP_OBJ="src/aja_common.o src/video_display/aja.o"
+        AJA_CAP_OBJ="src/video_capture/aja.o"
+        AJA_DISP_OBJ="src/video_display/aja.o"
         AC_DEFINE([HAVE_AJA], [1], [Build with AJA support])
 
         ADD_MODULE("display_aja", "$AJA_DISP_OBJ", "$AJA_LIB")
diff --git a/src/aja_common.cpp b/src/aja_common.cpp
deleted file mode 100644
index e2df63f0d..000000000
--- a/src/aja_common.cpp
+++ /dev/null
@@ -1,55 +0,0 @@
-/**
- * @file   aja_common.cpp
- * @author Martin Pulec     <pulec@cesnet.cz>
- */
-/*
- * Copyright (c) 2018 CESNET, z. s. p. o.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, is permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * 3. Neither the name of CESNET nor the names of its contributors may be
- *    used to endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING,
- * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
- * EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#include "config_unix.h"
-#include "config_win32.h"
-#endif
-
-#include "aja_common.h"
-
-const std::map<NTV2FrameBufferFormat, codec_t> ultragrid::aja::codec_map = {
-        { NTV2_FBF_10BIT_YCBCR, v210 },
-        { NTV2_FBF_8BIT_YCBCR, UYVY },
-        { NTV2_FBF_RGBA, RGBA },
-        { NTV2_FBF_10BIT_RGB, R10k },
-        { NTV2_FBF_8BIT_YCBCR_YUY2, YUYV },
-        { NTV2_FBF_24BIT_RGB, RGB },
-        { NTV2_FBF_24BIT_BGR, BGR },
-};
-
diff --git a/src/aja_common.h b/src/aja_common.h
index 81a003339..eabc478c1 100644
--- a/src/aja_common.h
+++ b/src/aja_common.h
@@ -42,7 +42,15 @@
 
 namespace ultragrid {
 namespace aja {
-extern const std::map<NTV2FrameBufferFormat, codec_t> codec_map;
+static const std::map<NTV2FrameBufferFormat, codec_t> codec_map = {
+        { NTV2_FBF_10BIT_YCBCR, v210 },
+        { NTV2_FBF_8BIT_YCBCR, UYVY },
+        { NTV2_FBF_RGBA, RGBA },
+        { NTV2_FBF_10BIT_RGB, R10k },
+        { NTV2_FBF_8BIT_YCBCR_YUY2, YUYV },
+        { NTV2_FBF_24BIT_RGB, RGB },
+        { NTV2_FBF_24BIT_BGR, BGR },
+};
 } // end of namespace aja
 } // end of namespace ultragrid