diff --git a/src/kits/opengl/Jamfile b/src/kits/opengl/Jamfile
index ca997a3ae1..d6687e0345 100644
--- a/src/kits/opengl/Jamfile
+++ b/src/kits/opengl/Jamfile
@@ -25,7 +25,7 @@ UseHeaders [ FDirName $(SUBDIR) mesa swrast_setup ] ;
 
 	if $(TARGET_ARCH) = x86 {
 		defines += USE_X86_ASM USE_MMX_ASM USE_3DNOW_ASM ; 
-		if $(TARGET_PLATFORM != haiku) {
+		if $(TARGET_PLATFORM) != haiku {
 			# FIXME: Remove me when Haiku SSE support will be fixed.
 			defines += USE_SSE_ASM ;
 		}
diff --git a/src/kits/opengl/mesa/Jamfile b/src/kits/opengl/mesa/Jamfile
index ce1ef44300..18301a06cd 100644
--- a/src/kits/opengl/mesa/Jamfile
+++ b/src/kits/opengl/mesa/Jamfile
@@ -41,7 +41,7 @@ SEARCH_SOURCE += [ FDirName $(SUBDIR) vbo ] ;
 
 	if $(TARGET_ARCH) = x86 {
 		defines += USE_X86_ASM USE_MMX_ASM USE_3DNOW_ASM ; 
-		if $(TARGET_PLATFORM != haiku) {
+		if $(TARGET_PLATFORM) != haiku {
 			# FIXME: Remove me when Haiku SSE support will be fixed.
 			defines += USE_SSE_ASM ;
 		}