diff --git a/src/add-ons/input_server/methods/canna/canna/cannabuild.h b/src/add-ons/input_server/methods/canna/canna/cannabuild.h
index 1d61388880..7dd9f67990 100644
--- a/src/add-ons/input_server/methods/canna/canna/cannabuild.h
+++ b/src/add-ons/input_server/methods/canna/canna/cannabuild.h
@@ -10,9 +10,9 @@
 //#define _BUILDING_CANNALIB 
 
 #ifdef _BUILDING_CANNALIB 
-#define canna_export     __declspec(dllexport) 
+#define canna_export   //  __declspec(dllexport) 
 #else 
-#define canna_export __declspec(dllimport) 
+#define canna_export   //  __declspec(dllimport) 
 #endif
 
 #endif // CANNABUILD_H
diff --git a/src/add-ons/input_server/methods/canna/lib/Jamfile b/src/add-ons/input_server/methods/canna/lib/Jamfile
index 24d2490d98..c81e4ad418 100644
--- a/src/add-ons/input_server/methods/canna/lib/Jamfile
+++ b/src/add-ons/input_server/methods/canna/lib/Jamfile
@@ -2,6 +2,10 @@ SubDir HAIKU_TOP src add-ons input_server methods canna lib ;
 
 SetSubDirSupportedPlatformsBeOSCompatible ;
 
+# filter warnings we don't want here
+TARGET_WARNING_CCFLAGS = [ FFilter $(TARGET_WARNING_CCFLAGS)
+	: -Wmissing-prototypes ] ;
+
 SubDirCcFlags -x c++ -ansi -trigraphs -funsigned-char -funsigned-bitfields -w -Wno-multichar -Wno-ctor-dtor-privacy -pedantic -Wno-long-long -Woverloaded-virtual -D_BUILDING_CANNALIB -D_WCHAR_T ;
 
 SubDirHdrs [ FDirName $(SUBDIR) $(DOTDOT) canna ] ;
diff --git a/src/add-ons/input_server/methods/canna/rk/Jamfile b/src/add-ons/input_server/methods/canna/rk/Jamfile
index c08cd706b1..504a097f98 100644
--- a/src/add-ons/input_server/methods/canna/rk/Jamfile
+++ b/src/add-ons/input_server/methods/canna/rk/Jamfile
@@ -2,6 +2,10 @@ SubDir HAIKU_TOP src add-ons input_server methods canna rk ;
 
 SetSubDirSupportedPlatformsBeOSCompatible ;
 
+# filter warnings we don't want here
+TARGET_WARNING_CCFLAGS = [ FFilter $(TARGET_WARNING_CCFLAGS)
+        : -Wmissing-prototypes ] ;
+
 SubDirCcFlags -x c++ -ansi -trigraphs -funsigned-char -funsigned-bitfields -w -Wno-multichar -Wno-ctor-dtor-privacy -pedantic -Wno-long-long -Woverloaded-virtual -D_BUILDING_CANNALIB -D_WCHAR_T ;
 
 SubDirHdrs [ FDirName $(SUBDIR) $(DOTDOT) canna ] ;