diff --git a/Changes b/Changes
index 42ce9b19b..b7afe9dca 100644
--- a/Changes
+++ b/Changes
@@ -7,6 +7,8 @@ indicates the contributor was also the author of the fix; Thanks!
 
 **** Add error message when modules have duplicate names. [Stefan Thiede]
 
+**** Fix multiple .v files being read in random order. [Stefan Thiede]
+
 * Verilator 3.661 2008/04/04
 
 ***  The --enable-defenv configure option added in 3.660 is now the default.
diff --git a/src/V3Options.cpp b/src/V3Options.cpp
index c3b1ec070..ef40e43ff 100644
--- a/src/V3Options.cpp
+++ b/src/V3Options.cpp
@@ -101,9 +101,9 @@ void V3Options::addLibraryFile(const string& filename) {
     }
 }
 void V3Options::addVFile(const string& filename) {
-    if (m_vFiles.find(filename) == m_vFiles.end()) {
-	m_vFiles.insert(filename);
-    }
+    // We use a list for v files, because it's legal to have includes
+    // in a specific order and multiple of them.
+    m_vFiles.push_back(filename);
 }
 void V3Options::addArg(const string& arg) {
     m_impp->m_allArgs.push_back(arg);
diff --git a/src/V3Options.h b/src/V3Options.h
index 48c4ae033..4f9a2c2a6 100644
--- a/src/V3Options.h
+++ b/src/V3Options.h
@@ -25,6 +25,7 @@
 #include "config_build.h"
 #include "verilatedos.h"
 #include <string>
+#include <vector>
 #include <set>
 
 #include "V3Global.h"
@@ -70,6 +71,7 @@ public:
 class V3OptionsImp;
 class FileLine;
 
+typedef vector<string> V3StringList;
 typedef set<string> V3StringSet;
 
 class V3Options {
@@ -78,7 +80,7 @@ class V3Options {
 
     V3StringSet	m_cppFiles;	// argument: C++ files to link against
     V3StringSet	m_libraryFiles;	// argument: Verilog -v files
-    V3StringSet	m_vFiles;	// argument: Verilog files to read
+    V3StringList m_vFiles;	// argument: Verilog files to read
 
     bool	m_preprocOnly;	// main switch: -E
     bool	m_makeDepend;	// main switch: -MMD
@@ -217,7 +219,7 @@ class V3Options {
     string xAssign() const { return m_xAssign; }
     const V3StringSet& cppFiles() const { return m_cppFiles; }
     const V3StringSet& libraryFiles() const { return m_libraryFiles; }
-    const V3StringSet& vFiles() const { return m_vFiles; }
+    const V3StringList& vFiles() const { return m_vFiles; }
     const V3LangCode& language() const { return m_language; }
 
     // ACCESSORS (optimization options)
diff --git a/src/Verilator.cpp b/src/Verilator.cpp
index d378020b0..e846669c9 100644
--- a/src/Verilator.cpp
+++ b/src/Verilator.cpp
@@ -91,7 +91,7 @@ V3Global v3Global;
 void V3Global::readFiles() {
     V3Read reader (m_rootp);
     // Read top module
-    for (V3StringSet::iterator it = v3Global.opt.vFiles().begin();
+    for (V3StringList::const_iterator it = v3Global.opt.vFiles().begin();
 	 it != v3Global.opt.vFiles().end(); ++it) {
 	string filename = *it;
 	reader.readFile(new FileLine("CommandLine",0), filename, false);
@@ -100,7 +100,7 @@ void V3Global::readFiles() {
     // Read libraries
     // To be compatible with other simulators,
     // this needs to be done after the top file is read
-    for (V3StringSet::iterator it = v3Global.opt.libraryFiles().begin();
+    for (V3StringSet::const_iterator it = v3Global.opt.libraryFiles().begin();
 	 it != v3Global.opt.libraryFiles().end(); ++it) {
 	string filename = *it;
 	reader.readFile(new FileLine("CommandLine",0), filename, true);