diff --git a/GPL/DemanglerGnu/build.gradle b/GPL/DemanglerGnu/build.gradle
index 47d527c77a..13b8cf7f33 100644
--- a/GPL/DemanglerGnu/build.gradle
+++ b/GPL/DemanglerGnu/build.gradle
@@ -135,6 +135,7 @@ model {
 			if (version.equals(v41)) {
 				if (toolChain in Gcc) {			
 					//cCompiler.args "-DCP_DEMANGLE_DEBUG"
+					cCompiler.args "-std=gnu17"
 					cCompiler.args "-DHAVE_STDLIB_H"
 					cCompiler.args "-DHAVE_STRING_H"
 				}
@@ -151,6 +152,7 @@ model {
 			else if (version.equals(v24)) {
 				if (toolChain in Gcc) {
 					cCompiler.args "-DMAIN_CPLUS_DEM"
+					cCompiler.args "-std=gnu17"
 					cCompiler.args "-DHAVE_STDLIB_H"
 					cCompiler.args "-DHAVE_STRING_H"
 				}