diff --git a/Makefile.plugins.mk b/Makefile.plugins.mk
index 98e789f5..09125e23 100644
--- a/Makefile.plugins.mk
+++ b/Makefile.plugins.mk
@@ -544,7 +544,7 @@ endif
 # ---------------------------------------------------------------------------------------------------------------------
 # CLAP
 
-ifeq ($(HAIKU_OR_MACOS_OR_WASM_OR_WINDOWS),true)
+ifneq ($(HAIKU_OR_MACOS_OR_WASM_OR_WINDOWS),true)
 ifeq ($(HAVE_DGL),true)
 CLAP_LIBS = -lpthread
 endif