diff --git a/kernel/rtlil.cc b/kernel/rtlil.cc
index 8df719aa9..59ce28119 100644
--- a/kernel/rtlil.cc
+++ b/kernel/rtlil.cc
@@ -202,7 +202,7 @@ const pool<IdString> &RTLIL::builtin_ff_cell_types() {
 RTLIL::Const::Const(const std::string &str)
 {
 	if (str.size() * 8 > 0x1000000)
-		throw std::length_error("RTLIL Const width must be less than 2^24");
+		log_error("RTLIL Const width must be less than 2^24");
 
 	flags = RTLIL::CONST_FLAG_STRING;
 	bits.reserve(str.size() * 8);
@@ -218,10 +218,10 @@ RTLIL::Const::Const(const std::string &str)
 RTLIL::Const::Const(int val, int width)
 {
 	if (width < 0)
-		throw std::length_error("RTLIL Const width must not be negative");
+		log_error("RTLIL Const width must not be negative");
 
 	if (width > 0x1000000)
-		throw std::length_error("RTLIL Const width must be less than 2^24");
+		log_error("RTLIL Const width must be less than 2^24");
 
 	flags = RTLIL::CONST_FLAG_NONE;
 	bits.reserve(width);
@@ -234,10 +234,10 @@ RTLIL::Const::Const(int val, int width)
 RTLIL::Const::Const(RTLIL::State bit, int width)
 {
 	if (width < 0)
-		throw std::length_error("RTLIL Const width must not be negative");
+		log_error("RTLIL Const width must not be negative");
 
 	if (width > 0x1000000)
-		throw std::length_error("RTLIL Const width must be less than 2^24");
+		log_error("RTLIL Const width must be less than 2^24");
 
 	flags = RTLIL::CONST_FLAG_NONE;
 	bits.reserve(width);
@@ -249,7 +249,7 @@ RTLIL::Const::Const(const std::vector<bool> &bits)
 {
 
 	if (bits.size() > 0x1000000)
-		throw std::length_error("RTLIL Const width must be less than 2^24");
+		log_error("RTLIL Const width must be less than 2^24");
 
 	flags = RTLIL::CONST_FLAG_NONE;
 	this->bits.reserve(bits.size());
@@ -317,7 +317,7 @@ RTLIL::Const RTLIL::Const::from_string(const std::string &str)
 {
 
 	if (str.size() > 0x1000000)
-		throw std::length_error("RTLIL width must be less than 2^24");
+		log_error("RTLIL width must be less than 2^24");
 
 	Const c;
 	c.bits.reserve(str.size());