diff --git a/configure.ac b/configure.ac
index b6fff896e6f1266244b1470541f077ba9e79ba0a..eeed08c78363650b694873beeccd94a76b03c3b7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -104,7 +104,7 @@ ac_enable_fixed="no";
 AC_ARG_ENABLE(fixed-point, [  --enable-fixed-point    compile as fixed-point],
 [if test "$enableval" = yes; then
   ac_enable_fixed="yes";
-  AC_DEFINE([FIXED_POINT], , [Compile as fixed-point])
+  AC_DEFINE([FIXED_POINT], [1], [Compile as fixed-point])
 else
   AC_DEFINE([FLOATING_POINT], , [Compile as floating-point])
 fi],
diff --git a/silk/SKP_Silk_control_codec.c b/silk/SKP_Silk_control_codec.c
index 79ee49dd61473e305f9b387445bb7de70953f71c..0beb24529555f9842f76e7ef7bffb1d9c67aa761 100644
--- a/silk/SKP_Silk_control_codec.c
+++ b/silk/SKP_Silk_control_codec.c
@@ -25,6 +25,10 @@ ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ***********************************************************************/
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include "SKP_Silk_tuning_parameters.h"
 #if FIXED_POINT
 #include "SKP_Silk_main_FIX.h"
diff --git a/silk/SKP_Silk_enc_API.c b/silk/SKP_Silk_enc_API.c
index 417253b2c8d77a48db8eeb59ffed4c6a0acc9bcb..5c23d991f2a3e848a1a98509c01d5c14800784e8 100644
--- a/silk/SKP_Silk_enc_API.c
+++ b/silk/SKP_Silk_enc_API.c
@@ -25,6 +25,9 @@ ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ***********************************************************************/
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 
 #include "SKP_Silk_define.h"
 #include "SKP_Silk_SDK_API.h"
diff --git a/silk/SKP_Silk_init_encoder.c b/silk/SKP_Silk_init_encoder.c
index 7f2b7c35333c547211ab910cf971eb0606af872e..3baf672d69728d5efd6f47f0ac53426ed2268f38 100644
--- a/silk/SKP_Silk_init_encoder.c
+++ b/silk/SKP_Silk_init_encoder.c
@@ -25,6 +25,10 @@ ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ***********************************************************************/
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #if FIXED_POINT
 #include "SKP_Silk_main_FIX.h"
 #define SKP_Silk_encoder_state_Fxx      SKP_Silk_encoder_state_FIX