diff --git a/source/common/console/c_enginecmds.cpp b/source/common/console/c_enginecmds.cpp
index 4911b9f44..38e64ab46 100644
--- a/source/common/console/c_enginecmds.cpp
+++ b/source/common/console/c_enginecmds.cpp
@@ -244,7 +244,7 @@ CCMD (wdir)
 	{
 		if (wadnum == -1 || fileSystem.GetFileContainer(i) == wadnum)
 		{
-			Printf ("%10d %s\n", fileSystem.FileLength(i), fileSystem.GetFileFullName(i));
+			Printf ("%10ld %s\n", fileSystem.FileLength(i), fileSystem.GetFileFullName(i));
 		}
 	}
 }
diff --git a/source/common/filesystem/source/filesystem.cpp b/source/common/filesystem/source/filesystem.cpp
index b931920e9..74da5a260 100644
--- a/source/common/filesystem/source/filesystem.cpp
+++ b/source/common/filesystem/source/filesystem.cpp
@@ -434,7 +434,7 @@ void FileSystem::AddFile (const char *filename, FileReader *filer, LumpFilterInf
 						snprintf(cksumout + (j * 2), 3, "%02X", cksum[j]);
 					}
 
-					fprintf(hashfile, "file: %s, lump: %s, hash: %s, size: %llu\n", filename, resfile->getName(i), cksumout, (uint64_t)resfile->Length(i));
+					fprintf(hashfile, "file: %s, lump: %s, hash: %s, size: %lu\n", filename, resfile->getName(i), cksumout, (uint64_t)resfile->Length(i));
 				}
 			}
 		}
diff --git a/source/common/scripting/backend/codegen.cpp b/source/common/scripting/backend/codegen.cpp
index 84f7e76b4..66f99e8b4 100644
--- a/source/common/scripting/backend/codegen.cpp
+++ b/source/common/scripting/backend/codegen.cpp
@@ -11674,7 +11674,7 @@ FxExpression *FxThreeArgForEachLoop::Resolve(FCompileContext &ctx)
 
 	if(HasGameSpecificThreeArgForEachLoopTypeNames())
 	{
-		ScriptPosition.Message(MSG_ERROR, "foreach( a, b, c : it ) - 'it' must be % but is a %s", GetGameSpecificThreeArgForEachLoopTypeNames(), BlockIteratorExpr->ValueType->DescriptiveName());
+		ScriptPosition.Message(MSG_ERROR, "foreach( a, b, c : it ) - 'it' must be %s but is a %s", GetGameSpecificThreeArgForEachLoopTypeNames(), BlockIteratorExpr->ValueType->DescriptiveName());
 		delete this;
 		return nullptr;
 	}
@@ -11727,7 +11727,7 @@ FxExpression *FxTypedForEachLoop::Resolve(FCompileContext &ctx)
 
 	if(HasGameSpecificTypedForEachLoopTypeNames())
 	{
-		ScriptPosition.Message(MSG_ERROR, "foreach(Type var : it ) - 'it' must be % but is a %s",GetGameSpecificTypedForEachLoopTypeNames(), Expr->ValueType->DescriptiveName());
+		ScriptPosition.Message(MSG_ERROR, "foreach(Type var : it ) - 'it' must be %s but is a %s",GetGameSpecificTypedForEachLoopTypeNames(), Expr->ValueType->DescriptiveName());
 		delete this;
 		return nullptr;
 	}
diff --git a/source/core/initfs.cpp b/source/core/initfs.cpp
index 9e47401b1..a482115ac 100644
--- a/source/core/initfs.cpp
+++ b/source/core/initfs.cpp
@@ -450,7 +450,7 @@ void InitFileSystem(TArray<GrpEntry>& groups)
 		for (int num = 0; num < fileSystem.GetNumEntries(); num++)
 		{
 			int64_t fd = fileSystem.FileLength(num);
-			fprintf(f, "%.50s   %60s  %lld\n", fileSystem.GetFileFullName(num), fileSystem.GetResourceFileFullName(fileSystem.GetFileContainer(num)), fd);
+			fprintf(f, "%.50s   %60s  %ld\n", fileSystem.GetFileFullName(num), fileSystem.GetResourceFileFullName(fileSystem.GetFileContainer(num)), fd);
 		}
 		fclose(f);
 	}