diff --git a/src/tools/rcc/rcc.cpp b/src/tools/rcc/rcc.cpp
index 010a785..60e2ce9 100644
--- a/src/tools/rcc/rcc.cpp
+++ b/src/tools/rcc/rcc.cpp
@@ -83,6 +83,10 @@ static inline QString msgOpenReadFailed(const QString &fname, const QString &why
 }
 
 
+// Offsets of written blobs (for eliminate duplicates data)
+QHash<QString, qint64> writtenBlobs;
+
+
 ///////////////////////////////////////////////////////////
 //
 // RCCFileInfo
@@ -215,6 +219,12 @@ qint64 RCCFileInfo::writeDataBlob(RCCResourceLibrary &lib, qint64 offset,
 {
     const bool text = (lib.m_format == RCCResourceLibrary::C_Code);
 
+    // don't put the same file data
+    if(writtenBlobs.contains(m_fileInfo.absoluteFilePath())) {
+      m_dataOffset = writtenBlobs.value(m_fileInfo.absoluteFilePath());
+      return offset;
+    }
+
     //capture the offset
     m_dataOffset = offset;
 
@@ -273,6 +283,10 @@ qint64 RCCFileInfo::writeDataBlob(RCCResourceLibrary &lib, qint64 offset,
     // done
     if (text)
         lib.writeString("\n  ");
+
+   // this file has been written
+   writtenBlobs[m_fileInfo.absoluteFilePath()] = m_dataOffset;
+
     return offset;
 }