diff --git a/nimbus/vm/interpreter/nvm_gas_costs.nim b/nimbus/vm/interpreter/nvm_gas_costs.nim
index 0492829c4..088115404 100644
--- a/nimbus/vm/interpreter/nvm_gas_costs.nim
+++ b/nimbus/vm/interpreter/nvm_gas_costs.nim
@@ -7,7 +7,7 @@
 
 import
   math, eth/common/eth_types,
-  vm/interpreter/utils/[macros_gen_opcodes, utils_numeric],
+  vm/interpreter/utils/[macros_gen_opcodes, nvm_utils_numeric],
   vm/interpreter/[nvm_opcode_values, nvm_forks], errors
 
 when defined(evmc_enabled):
diff --git a/nimbus/vm/interpreter/opcodes_impl.nim b/nimbus/vm/interpreter/opcodes_impl.nim
index 8fffc39e9..a691f4bcf 100644
--- a/nimbus/vm/interpreter/opcodes_impl.nim
+++ b/nimbus/vm/interpreter/opcodes_impl.nim
@@ -8,7 +8,7 @@
 import
   strformat, times, sets, sequtils, options,
   chronicles, stint, nimcrypto, stew/ranges/ptr_arith, eth/common,
-  vm/interpreter/utils/[macros_procs_opcodes, utils_numeric],
+  vm/interpreter/utils/[macros_procs_opcodes, nvm_utils_numeric],
   vm/interpreter/[gas_meter, nvm_gas_costs, nvm_opcode_values, nvm_forks],
   vm/[nvm_memory, stack, code_stream, nvm_computation, nvm_state, nvm_types],
   errors, constants,
diff --git a/nimbus/vm/interpreter/utils/macros_procs_opcodes.nim b/nimbus/vm/interpreter/utils/macros_procs_opcodes.nim
index f474591c4..bc3851a24 100644
--- a/nimbus/vm/interpreter/utils/macros_procs_opcodes.nim
+++ b/nimbus/vm/interpreter/utils/macros_procs_opcodes.nim
@@ -12,7 +12,7 @@ import
   macros, strformat, stint, eth/common,
   vm/[nvm_computation, stack, code_stream, nvm_memory],
   vm/nvm_types, errors, vm/interpreter/[gas_meter, nvm_opcode_values],
-  vm/interpreter/utils/utils_numeric
+  vm/interpreter/utils/nvm_utils_numeric
 
 when defined(evmc_enabled):
   import vm/evmc_api, evmc/evmc
diff --git a/nimbus/vm/interpreter/utils/utils_numeric.nim b/nimbus/vm/interpreter/utils/nvm_utils_numeric.nim
similarity index 100%
rename from nimbus/vm/interpreter/utils/utils_numeric.nim
rename to nimbus/vm/interpreter/utils/nvm_utils_numeric.nim
diff --git a/nimbus/vm/nvm_memory.nim b/nimbus/vm/nvm_memory.nim
index 1d1e55a93..11ea255ea 100644
--- a/nimbus/vm/nvm_memory.nim
+++ b/nimbus/vm/nvm_memory.nim
@@ -9,7 +9,7 @@ import
   sequtils,
   chronicles, eth/common/eth_types,
   errors, validation,
-  vm/interpreter/utils/utils_numeric
+  vm/interpreter/utils/nvm_utils_numeric
 
 logScope:
   topics = "vm memory"
diff --git a/nimbus/vm/nvm_precompiles.nim b/nimbus/vm/nvm_precompiles.nim
index 1cdd5502c..8695041c9 100644
--- a/nimbus/vm/nvm_precompiles.nim
+++ b/nimbus/vm/nvm_precompiles.nim
@@ -1,6 +1,6 @@
 import
   vm/nvm_types,
-  vm/interpreter/[gas_meter, nvm_gas_costs, utils/utils_numeric, nvm_forks],
+  vm/interpreter/[gas_meter, nvm_gas_costs, utils/nvm_utils_numeric, nvm_forks],
   errors, stint, eth/[keys, common], chronicles, tables, macros,
   math, nimcrypto, bncurve/[fields, groups], vm/blake2b_f, vm/blscurve
 
diff --git a/nimbus/vm_utils_numeric.nim b/nimbus/vm_utils_numeric.nim
new file mode 100644
index 000000000..5d83a991e
--- /dev/null
+++ b/nimbus/vm_utils_numeric.nim
@@ -0,0 +1,30 @@
+# Nimbus
+# Copyright (c) 2018 Status Research & Development GmbH
+# Licensed under either of
+#  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
+#    http://www.apache.org/licenses/LICENSE-2.0)
+#  * MIT license ([LICENSE-MIT](LICENSE-MIT) or
+#    http://opensource.org/licenses/MIT)
+# at your option. This file may not be copied, modified, or distributed except
+# according to those terms.
+
+# At the moment, this header file interface is only used for testing, so it
+# might be worth merging it into a vm_internals.nim (or so) header file.
+import
+  ./vm/interpreter/utils/nvm_utils_numeric as vmn
+
+export
+  vmn.GasNatural,
+  vmn.calcMemSize,
+  vmn.ceil32,
+  vmn.cleanMemRef,
+  vmn.log2,
+  vmn.log256,
+  vmn.rangeToPadded,
+  vmn.rangeToPadded2,
+  vmn.safeInt,
+  vmn.setSign,
+  vmn.toInt,
+  vmn.wordCount
+  
+# End
diff --git a/tests/test_misc.nim b/tests/test_misc.nim
index 7629500e4..92d35f270 100644
--- a/tests/test_misc.nim
+++ b/tests/test_misc.nim
@@ -1,7 +1,7 @@
 import
   unittest2, stew/byteutils,
   eth/common/eth_types,
-  ../nimbus/vm/interpreter/utils/utils_numeric
+  ../nimbus/vm_utils_numeric
 
 func toAddress(n: int): EthAddress =
   result[19] = n.byte