diff --git a/src/Duplo.cpp b/src/Duplo.cpp
index 9df1291..82d2cc7 100644
--- a/src/Duplo.cpp
+++ b/src/Duplo.cpp
@@ -172,10 +172,26 @@ namespace {
         std::ostream& outFile) {
         unsigned duplicateLines = 0;
         if (xml) {
-            outFile << "    <set LineCount=\"" << count << "\">" << std::endl;
-            outFile << "        <block SourceFile=\"" << source1.GetFilename() << "\" StartLineNumber=\"" << source1.GetLine(line1).GetLineNumber() << "\"/>" << std::endl;
-            outFile << "        <block SourceFile=\"" << source2.GetFilename() << "\" StartLineNumber=\"" << source2.GetLine(line2).GetLineNumber() << "\"/>" << std::endl;
-            outFile << "        <lines xml:space=\"preserve\">" << std::endl;
+            outFile
+                << "    <set LineCount=\"" << count << "\">"
+                << std::endl;
+            int startLineNumber1 = source1.GetLine(line1).GetLineNumber();
+            int endLineNumber1 = source1.GetLine(line1 + count).GetLineNumber();
+            outFile
+                << "        <block SourceFile=\"" << source1.GetFilename()
+                << "\" StartLineNumber=\"" << startLineNumber1
+                << "\" EndLineNumber=\"" << endLineNumber1 << "\"/>"
+                << std::endl;
+            int startLineNumber2 = source2.GetLine(line2).GetLineNumber();
+            int endLineNumber2 = source2.GetLine(line2 + count).GetLineNumber();
+            outFile
+                << "        <block SourceFile=\"" << source2.GetFilename()
+                << "\" StartLineNumber=\"" << startLineNumber2
+                << "\" EndLineNumber=\"" << endLineNumber2 << "\"/>"
+                << std::endl;
+            outFile
+                << "        <lines xml:space=\"preserve\">"
+                << std::endl;
             for (int j = 0; j < count; j++) {
                 // replace various characters/ strings so that it doesn't upset the XML parser
                 std::string tmpstr = source1.GetLine(j + line1).GetLine();
@@ -199,8 +215,14 @@ namespace {
             outFile << "        </lines>" << std::endl;
             outFile << "    </set>" << std::endl;
         } else {
-            outFile << source1.GetFilename() << "(" << source1.GetLine(line1).GetLineNumber() << ")" << std::endl;
-            outFile << source2.GetFilename() << "(" << source2.GetLine(line2).GetLineNumber() << ")" << std::endl;
+            outFile
+                << source1.GetFilename()
+                << "(" << source1.GetLine(line1).GetLineNumber() << ")"
+                << std::endl;
+            outFile
+                << source2.GetFilename()
+                << "(" << source2.GetLine(line2).GetLineNumber() << ")"
+                << std::endl;
             for (int j = 0; j < count; j++) {
                 outFile << source1.GetLine(j + line1).GetLine() << std::endl;
                 duplicateLines++;
diff --git a/tests/Simple/LineNumbers.c b/tests/Simple/LineNumbers.c
index 063f33d..e802829 100644
--- a/tests/Simple/LineNumbers.c
+++ b/tests/Simple/LineNumbers.c
@@ -7,6 +7,7 @@ EEEEE
 AAAAA
 BBBBB
 CCCCC
+// skip this line
 DDDDD
 EEEEE
 FFFFF
diff --git a/tests/Simple/test-xml.bats b/tests/Simple/test-xml.bats
index 413b26b..f371011 100644
--- a/tests/Simple/test-xml.bats
+++ b/tests/Simple/test-xml.bats
@@ -15,8 +15,8 @@ setup() {
     [ "${lines[0]}" = "<?xml version=\"1.0\"?>" ]
     [ "${lines[1]}" = "<duplo>" ]
     [ "${lines[2]}" = "    <set LineCount=\"5\">" ]
-    [ "${lines[3]}" = "        <block SourceFile=\"tests/Simple/LineNumbers.c\" StartLineNumber=\"7\"/>" ]
-    [ "${lines[4]}" = "        <block SourceFile=\"tests/Simple/LineNumbers.c\" StartLineNumber=\"1\"/>" ]
+    [ "${lines[3]}" = "        <block SourceFile=\"tests/Simple/LineNumbers.c\" StartLineNumber=\"7\" EndLineNumber=\"13\"/>" ]
+    [ "${lines[4]}" = "        <block SourceFile=\"tests/Simple/LineNumbers.c\" StartLineNumber=\"1\" EndLineNumber=\"7\"/>" ]
     [ "${lines[5]}" = "        <lines xml:space=\"preserve\">" ]
     [ "${lines[6]}" = "            <line Text=\"AAAAA\"/>" ]
     [ "${lines[7]}" = "            <line Text=\"BBBBB\"/>" ]
diff --git a/watch.sh b/watch.sh
index 33b14b5..b4e943a 100755
--- a/watch.sh
+++ b/watch.sh
@@ -11,7 +11,7 @@ fswatch \
     --extended \
     --latency 0.5 \
     --exclude ".*" \
-    --include "Makefile|(\.(h|cpp|bats)$)" . |
+    --include "Makefile|(\.(h|cpp|bats|c)$)" . |
 while read line; do
     p "new changes received: $line"