diff --git a/kernel/rtlil.cc b/kernel/rtlil.cc
index daa2d4184..b95c8b2d2 100644
--- a/kernel/rtlil.cc
+++ b/kernel/rtlil.cc
@@ -273,7 +273,7 @@ RTLIL::Const::Const(const std::string &str)
 	tag = backing_tag::string;
 }
 
-RTLIL::Const::Const(long long val) // default width 32
+RTLIL::Const::Const(long long int val) // default width 32
 {
 	flags = RTLIL::CONST_FLAG_NONE;
 	char bytes[] = {
@@ -283,7 +283,7 @@ RTLIL::Const::Const(long long val) // default width 32
 	tag = backing_tag::string;
 }
 
-RTLIL::Const::Const(long long val, int width)
+RTLIL::Const::Const(long long int val, int width)
 {
 	flags = RTLIL::CONST_FLAG_NONE;
 	if ((width & 7) == 0) {
diff --git a/kernel/rtlil.h b/kernel/rtlil.h
index 8cbe488a4..a12bada08 100644
--- a/kernel/rtlil.h
+++ b/kernel/rtlil.h
@@ -862,8 +862,8 @@ private:
 public:
 	Const() : flags(RTLIL::CONST_FLAG_NONE), tag(backing_tag::bits), bits_(std::vector<RTLIL::State>()) {}
 	Const(const std::string &str);
-	Const(long long val); // default width is 32
-	Const(long long val, int width);
+	Const(long long int val); // default width is 32
+	Const(long long int val, int width);
 	Const(RTLIL::State bit, int width = 1);
 	Const(std::vector<RTLIL::State> bits) : flags(RTLIL::CONST_FLAG_NONE), tag(backing_tag::bits), bits_(std::move(bits)) {}
 	Const(const std::vector<bool> &bits);