diff --git a/kernel/rtlil.cc b/kernel/rtlil.cc
index 0740ef297..7092eb0ed 100644
--- a/kernel/rtlil.cc
+++ b/kernel/rtlil.cc
@@ -224,16 +224,6 @@ RTLIL::Const::Const(int val, int width)
 	}
 }
 
-RTLIL::Const::Const(long long val, int width)
-{
-	flags = RTLIL::CONST_FLAG_NONE;
-	bits.reserve(width);
-	for (int i = 0; i < width; i++) {
-		bits.push_back((val & 1) != 0 ? State::S1 : State::S0);
-		val = val >> 1;
-	}
-}
-
 RTLIL::Const::Const(RTLIL::State bit, int width)
 {
 	flags = RTLIL::CONST_FLAG_NONE;
diff --git a/kernel/rtlil.h b/kernel/rtlil.h
index 131c7a433..713718499 100644
--- a/kernel/rtlil.h
+++ b/kernel/rtlil.h
@@ -664,7 +664,6 @@ struct RTLIL::Const
 	Const() : flags(RTLIL::CONST_FLAG_NONE) {}
 	Const(const std::string &str);
 	Const(int val, int width = 32);
-	Const(long long val, int width = 32);
 	Const(RTLIL::State bit, int width = 1);
 	Const(const std::vector<RTLIL::State> &bits) : bits(bits) { flags = CONST_FLAG_NONE; }
 	Const(const std::vector<bool> &bits);