diff --git a/src/addrman.h b/src/addrman.h
index 950798784da..e89fbba9f1b 100644
--- a/src/addrman.h
+++ b/src/addrman.h
@@ -22,13 +22,13 @@ private:
     // where knowledge about this address first came from
     CNetAddr source;
 
-    // last succesfull connection by us
+    // last successful connection by us
     int64 nLastSuccess;
 
     // last try whatsoever by us:
     // int64 CAddress::nLastTry
 
-    // connection attempts since last succesful attempt
+    // connection attempts since last successful attempt
     int nAttempts;
 
     // reference count in new sets (memory only)
diff --git a/src/base58.h b/src/base58.h
index bc681a08ca2..201a9e24b42 100644
--- a/src/base58.h
+++ b/src/base58.h
@@ -118,7 +118,7 @@ inline bool DecodeBase58(const char* psz, std::vector<unsigned char>& vchRet)
 }
 
 // Decode a base58-encoded string str into byte vector vchRet
-// returns true if decoding is succesful
+// returns true if decoding is successful
 inline bool DecodeBase58(const std::string& str, std::vector<unsigned char>& vchRet)
 {
     return DecodeBase58(str.c_str(), vchRet);
@@ -138,7 +138,7 @@ inline std::string EncodeBase58Check(const std::vector<unsigned char>& vchIn)
 }
 
 // Decode a base58-encoded string psz that includes a checksum, into byte vector vchRet
-// returns true if decoding is succesful
+// returns true if decoding is successful
 inline bool DecodeBase58Check(const char* psz, std::vector<unsigned char>& vchRet)
 {
     if (!DecodeBase58(psz, vchRet))
@@ -159,7 +159,7 @@ inline bool DecodeBase58Check(const char* psz, std::vector<unsigned char>& vchRe
 }
 
 // Decode a base58-encoded string str that includes a checksum, into byte vector vchRet
-// returns true if decoding is succesful
+// returns true if decoding is successful
 inline bool DecodeBase58Check(const std::string& str, std::vector<unsigned char>& vchRet)
 {
     return DecodeBase58Check(str.c_str(), vchRet);
diff --git a/src/util.cpp b/src/util.cpp
index 94bdba6ffb3..a4424a4632c 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -991,7 +991,7 @@ void ShrinkDebugFile()
 // "Never go to sea with two chronometers; take one or three."
 // Our three time sources are:
 //  - System clock
-//  - Median of other nodes's clocks
+//  - Median of other nodes clocks
 //  - The user (asking the user to fix the system clock if the first two disagree)
 //
 static int64 nMockTime = 0;  // For unit testing
@@ -1116,7 +1116,7 @@ std::string FormatSubVersion(const std::string& name, int nClientVersion, const
 //     --> may result in deadlock between the two threads, depending on when they run.
 // Solution implemented here:
 // Keep track of pairs of locks: (A before B), (A before C), etc.
-// Complain if any thread trys to lock in a different order.
+// Complain if any thread tries to lock in a different order.
 //
 
 struct CLockLocation
diff --git a/src/wallet.h b/src/wallet.h
index 1b17dea9db8..6fe3ca67c0d 100644
--- a/src/wallet.h
+++ b/src/wallet.h
@@ -39,7 +39,7 @@ private:
     // the current wallet version: clients below this version are not able to load the wallet
     int nWalletVersion;
 
-    // the maxmimum wallet format version: memory-only variable that specifies to what version this wallet may be upgraded
+    // the maximum wallet format version: memory-only variable that specifies to what version this wallet may be upgraded
     int nWalletMaxVersion;
 
 public: