diff --git a/bundles/org.eclipse.cdt.lsp.clangd/src/org/eclipse/cdt/lsp/clangd/internal/config/ClangdConfigurationAccess.java b/bundles/org.eclipse.cdt.lsp.clangd/src/org/eclipse/cdt/lsp/clangd/internal/config/ClangdConfigurationAccess.java
index 0368f1a2..313c30db 100644
--- a/bundles/org.eclipse.cdt.lsp.clangd/src/org/eclipse/cdt/lsp/clangd/internal/config/ClangdConfigurationAccess.java
+++ b/bundles/org.eclipse.cdt.lsp.clangd/src/org/eclipse/cdt/lsp/clangd/internal/config/ClangdConfigurationAccess.java
@@ -102,8 +102,7 @@ public List<String> commands(Object context) {
 		if (!options.queryDriver().isBlank()) {
 			list.add(NLS.bind("--query-driver={0}", options.queryDriver())); //$NON-NLS-1$
 		}
-		list.add(NLS.bind("--function-arg-placeholders={0}", //$NON-NLS-1$
-				String.valueOf(options.fillFunctionArguments())));
+		list.add(NLS.bind("--function-arg-placeholders={0}", options.fillFunctionArguments() ? 1 : 0)); //$NON-NLS-1$
 
 		list.addAll(options.additionalOptions());
 		return list;