diff --git a/include/errors_warnings.h b/include/errors_warnings.h
index dca3de89..6c03f41f 100644
--- a/include/errors_warnings.h
+++ b/include/errors_warnings.h
@@ -92,8 +92,6 @@ extern const char *const WARN_TRANSPARENCY_COLLAPSE;
 
 // Internal compiler errors (due to bug in the compiler)
 void internalerror(std::string message);
-void internalerror_numPalettesInPrimaryNeqPrimaryPalettesSize(std::string context, std::size_t configNumPalettesPrimary,
-                                                              std::size_t primaryPalettesSize);
 void internalerror_unknownCompilerMode(std::string context);
 void internalerror_unknownDecompilerMode(std::string context);
 
diff --git a/src/compiler.cpp b/src/compiler.cpp
index d52df51a..87069b1e 100644
--- a/src/compiler.cpp
+++ b/src/compiler.cpp
@@ -625,9 +625,9 @@ std::unique_ptr<CompiledTileset> compile(PtContext &ctx, const DecompiledTileset
 {
   if (ctx.compilerConfig.mode == CompilerMode::SECONDARY &&
       (ctx.fieldmapConfig.numPalettesInPrimary != ctx.compilerContext.pairedPrimaryTileset->palettes.size())) {
-    internalerror_numPalettesInPrimaryNeqPrimaryPalettesSize("compiler::compile",
-                                                             ctx.fieldmapConfig.numPalettesInPrimary,
-                                                             ctx.compilerContext.pairedPrimaryTileset->palettes.size());
+    internalerror(fmt::format(
+        "compiler::compile config.numPalettesInPrimary did not match primary palette set size ({} != {})",
+        ctx.fieldmapConfig.numPalettesInPrimary, ctx.compilerContext.pairedPrimaryTileset->palettes.size()));
   }
 
   auto compiled = std::make_unique<CompiledTileset>();
diff --git a/src/errors_warnings.cpp b/src/errors_warnings.cpp
index 45ac1e23..225f5396 100644
--- a/src/errors_warnings.cpp
+++ b/src/errors_warnings.cpp
@@ -52,13 +52,6 @@ static std::string getTilePrettyString(const RGBATile &tile)
 
 void internalerror(std::string message) { throw std::runtime_error(message); }
 
-void internalerror_numPalettesInPrimaryNeqPrimaryPalettesSize(std::string context, std::size_t configNumPalettesPrimary,
-                                                              std::size_t primaryPalettesSize)
-{
-  internalerror("config.numPalettesInPrimary did not match primary palette set size (" +
-                std::to_string(configNumPalettesPrimary) + " != " + std::to_string(primaryPalettesSize) + ")");
-}
-
 void internalerror_unknownCompilerMode(std::string context) { internalerror(context + " unknown CompilerMode"); }
 
 void internalerror_unknownDecompilerMode(std::string context) { internalerror(context + " unknown DecompilerMode"); }