diff --git a/mongoose.h b/mongoose.h
index 0f85b18b..e84ea491 100644
--- a/mongoose.h
+++ b/mongoose.h
@@ -126,6 +126,9 @@
 /* Amalgamated: #include "common/platforms/platform_nxp_kinetis.h" */
 /* Amalgamated: #include "common/platforms/platform_pic32.h" */
 /* Amalgamated: #include "common/platforms/platform_stm32.h" */
+#if CS_PLATFORM == CS_P_CUSTOM
+/* Amalgamated: #include "platform_custom.h" */
+#endif
 
 /* Common stuff */
 
diff --git a/src/common/platform.h b/src/common/platform.h
index af0b4f50..d02703fc 100644
--- a/src/common/platform.h
+++ b/src/common/platform.h
@@ -90,6 +90,9 @@
 #include "common/platforms/platform_nxp_kinetis.h"
 #include "common/platforms/platform_pic32.h"
 #include "common/platforms/platform_stm32.h"
+#if CS_PLATFORM == CS_P_CUSTOM
+#include "platform_custom.h"
+#endif
 
 /* Common stuff */