diff --git a/slideshow/Library_OGLTrans.mk b/slideshow/Library_OGLTrans.mk
index 85051483df66..4887e3dfb78c 100644
--- a/slideshow/Library_OGLTrans.mk
+++ b/slideshow/Library_OGLTrans.mk
@@ -9,12 +9,6 @@
 
 $(eval $(call gb_Library_Library,OGLTrans))
 
-ifneq ($(strip $(debug)$(DEBUG)),)
-$(eval $(call gb_Library_add_defs,OGLTrans,\
-    -DBOOST_SP_ENABLE_DEBUG_HOOKS \
-))
-endif
-
 $(eval $(call gb_Library_add_defs,OGLTrans,\
     -DGLM_FORCE_RADIANS \
 ))
diff --git a/slideshow/Library_slideshow.mk b/slideshow/Library_slideshow.mk
index 3b9f3fb3f095..3bea78134569 100644
--- a/slideshow/Library_slideshow.mk
+++ b/slideshow/Library_slideshow.mk
@@ -14,12 +14,6 @@ $(eval $(call gb_Library_set_include,slideshow,\
     -I$(SRCDIR)/slideshow/source/inc \
 ))
 
-ifneq ($(strip $(debug)$(DEBUG)),)
-$(eval $(call gb_Library_add_defs,slideshow,\
-    -DBOOST_SP_ENABLE_DEBUG_HOOKS \
-))
-endif
-
 $(eval $(call gb_Library_set_precompiled_header,slideshow,slideshow/inc/pch/precompiled_slideshow))
 
 $(eval $(call gb_Library_use_externals,slideshow,\
diff --git a/slideshow/source/engine/smilfunctionparser.cxx b/slideshow/source/engine/smilfunctionparser.cxx
index 1859b7e1688b..6482be4a2316 100644
--- a/slideshow/source/engine/smilfunctionparser.cxx
+++ b/slideshow/source/engine/smilfunctionparser.cxx
@@ -607,23 +607,4 @@ namespace slideshow::internal
         }
 }
 
-#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
-
-// debug hooks
-
-namespace boost
-{
-
-void sp_scalar_constructor_hook(void *)
-{
-}
-
-void sp_scalar_destructor_hook(void *)
-{
-}
-
-}
-
-#endif
-
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */