diff --git a/src/streams.h b/src/streams.h
--- a/src/streams.h
+++ b/src/streams.h
@@ -815,20 +815,6 @@
         return true;
     }
 
-    bool Seek(uint64_t nPos) {
-        long nLongPos = nPos;
-        if (nPos != (uint64_t)nLongPos) {
-            return false;
-        }
-        if (fseek(src, nLongPos, SEEK_SET)) {
-            return false;
-        }
-        nLongPos = ftell(src);
-        nSrcPos = nLongPos;
-        nReadPos = nLongPos;
-        return true;
-    }
-
     //! Prevent reading beyond a certain position. No argument removes the
     //! limit.
     bool SetLimit(uint64_t nPos = std::numeric_limits<uint64_t>::max()) {
diff --git a/src/test/fuzz/buffered_file.cpp b/src/test/fuzz/buffered_file.cpp
--- a/src/test/fuzz/buffered_file.cpp
+++ b/src/test/fuzz/buffered_file.cpp
@@ -35,7 +35,7 @@
     if (opt_buffered_file && fuzzed_file != nullptr) {
         bool setpos_fail = false;
         while (fuzzed_data_provider.ConsumeBool()) {
-            switch (fuzzed_data_provider.ConsumeIntegralInRange<int>(0, 5)) {
+            switch (fuzzed_data_provider.ConsumeIntegralInRange<int>(0, 4)) {
                 case 0: {
                     std::array<uint8_t, 4096> arr{};
                     try {
@@ -48,18 +48,12 @@
                     break;
                 }
                 case 1: {
-                    opt_buffered_file->Seek(
-                        fuzzed_data_provider.ConsumeIntegralInRange<uint64_t>(
-                            0, 4096));
-                    break;
-                }
-                case 2: {
                     opt_buffered_file->SetLimit(
                         fuzzed_data_provider.ConsumeIntegralInRange<uint64_t>(
                             0, 4096));
                     break;
                 }
-                case 3: {
+                case 2: {
                     if (!opt_buffered_file->SetPos(
                             fuzzed_data_provider
                                 .ConsumeIntegralInRange<uint64_t>(0, 4096))) {
@@ -67,7 +61,7 @@
                     }
                     break;
                 }
-                case 4: {
+                case 3: {
                     if (setpos_fail) {
                         // Calling FindByte(...) after a failed SetPos(...) call
                         // may result in an infinite loop.
@@ -80,7 +74,7 @@
                     }
                     break;
                 }
-                case 5: {
+                case 4: {
                     ReadFromStream(fuzzed_data_provider, *opt_buffered_file);
                     break;
                 }