diff --git a/src/main/resources/org/bytedeco/javacpp/properties/linux-riscv64.properties b/src/main/resources/org/bytedeco/javacpp/properties/linux-riscv64.properties
index b5f84bb3..37ed9621 100644
--- a/src/main/resources/org/bytedeco/javacpp/properties/linux-riscv64.properties
+++ b/src/main/resources/org/bytedeco/javacpp/properties/linux-riscv64.properties
@@ -10,7 +10,7 @@ platform.compiler.cpp11=-std=c++11
 platform.compiler.cpp14=-std=c++14
 platform.compiler.cpp17=-std=c++17
 platform.compiler.debug=-O0 -g
-platform.compiler.default=-O3 -s
+platform.compiler.default=-march=rv64gc -mabi=lp64d -O3 -s
 platform.compiler.fastfpu=-ffast-math
 platform.compiler.nodeprecated=-Wno-deprecated-declarations
 platform.compiler.noexceptions=-fno-exceptions -fno-rtti