diff --git a/doc/loader.txt b/doc/loader.txt
index fb78fa51..54ac9982 100644
--- a/doc/loader.txt
+++ b/doc/loader.txt
@@ -45,6 +45,6 @@ These symbols can be defined later in C++ using
 
         linker->defineSymbol("xx", yy)
 
-This functionality (we could say it's a simple linker) is achived by
+This functionality (we could say it's a simple linker) is achieved by
 compiling the assembly into an ELF object file which a little C++
 module (src/linker.cpp) can interpret and work with.
diff --git a/doc/upx.pod b/doc/upx.pod
index 064f2da9..a242aab7 100644
--- a/doc/upx.pod
+++ b/doc/upx.pod
@@ -197,7 +197,7 @@ For win32/pe programs there's B<--strip-relocs=0>. See notes below.
 
 =head1 OVERLAY HANDLING OPTIONS
 
-Info: An "overlay" means auxillary data atached after the logical end of
+Info: An "overlay" means auxiliary data atached after the logical end of
 an executable, and it often contains application specific data
 (this is a common practice to avoid an extra data file, though
 it would be better to use resource sections).
@@ -616,7 +616,7 @@ How it works:
   UPX uses kernel execve(), which first requires decompressing to a
   temporary file in the filesystem.  Interestingly -
   because of the good memory management of the Linux kernel - this
-  often does not introduce a noticable delay, and in fact there
+  often does not introduce a noticeable delay, and in fact there
   will be no disk access at all if you have enough free memory as
   the entire process takes places within the filesystem buffers.
 
@@ -656,7 +656,7 @@ Specific drawbacks:
 
   - Because of temporary decompression to disk the decompression speed
     is not as fast as with the other executable formats. Still, I can see
-    no noticable delay when starting programs like my ~3 MB emacs (which
+    no noticeable delay when starting programs like my ~3 MB emacs (which
     is less than 1 MB when compressed :-).
 
 Extra options available for this executable format:
diff --git a/src/p_armpe.cpp b/src/p_armpe.cpp
index 072cfe5b..348cbdbb 100644
--- a/src/p_armpe.cpp
+++ b/src/p_armpe.cpp
@@ -632,7 +632,7 @@ void PackArmPe::pack(OutputFile *fo)
 
     //OutputFile::dump("x1", ibuf, usize);
 
-    // some checks for broken linkers - disable filter if neccessary
+    // some checks for broken linkers - disable filter if necessary
     bool allow_filter = true;
     if (ih.codebase == ih.database
         || ih.codebase + ih.codesize > ih.imagesize
diff --git a/src/p_elf_enum.h b/src/p_elf_enum.h
index 98f1f73c..f38c885b 100644
--- a/src/p_elf_enum.h
+++ b/src/p_elf_enum.h
@@ -29,7 +29,7 @@
 /*************************************************************************
 // Use the preprocessor to work around
 //   - that the types embedding these enums have to be PODs, and
-//     deriving from an empty base class (which is the ususal C++ way
+//     deriving from an empty base class (which is the usual C++ way
 //     of "importing" enums) does not yield a POD any more
 //   - that older compilers do not correctly perform EBCO
 **************************************************************************/
diff --git a/src/p_mach_enum.h b/src/p_mach_enum.h
index 208c0826..cb2120b6 100644
--- a/src/p_mach_enum.h
+++ b/src/p_mach_enum.h
@@ -28,7 +28,7 @@
 /*************************************************************************
 // Use the preprocessor to work around
 //   - that the types embedding these enums have to be PODs, and
-//     deriving from an empty base class (which is the ususal C++ way
+//     deriving from an empty base class (which is the usual C++ way
 //     of "importing" enums) does not yield a POD any more
 //   - that older compilers do not correctly perform EBCO
 **************************************************************************/
diff --git a/src/p_w32pe.cpp b/src/p_w32pe.cpp
index 58a77d6b..d7e480bc 100644
--- a/src/p_w32pe.cpp
+++ b/src/p_w32pe.cpp
@@ -717,7 +717,7 @@ void PackW32Pe::pack(OutputFile *fo)
 
     //OutputFile::dump("x1", ibuf, usize);
 
-    // some checks for broken linkers - disable filter if neccessary
+    // some checks for broken linkers - disable filter if necessary
     bool allow_filter = true;
     if (ih.codebase == ih.database
         || ih.codebase + ih.codesize > ih.imagesize
diff --git a/src/packer.cpp b/src/packer.cpp
index 2b92f4a1..e770d972 100644
--- a/src/packer.cpp
+++ b/src/packer.cpp
@@ -1190,7 +1190,7 @@ void Packer::relocateLoader()
 // The workaround is for hdr_buf and hdr_u_len to describe the Elf headers
 // (typically less than 512 bytes) when .text is passed in, and include
 // them in the calculation of shortest output.  Then the result
-// this->ph.method  will say which [single] method to use for everthing.
+// this->ph.method  will say which [single] method to use for everything.
 // The Elf headers are never filtered.  They are short enough (< 512 bytes)
 // that compressing them more than once per method (once here when choosing,
 // once again just before writing [because compressWithFilters discards])
diff --git a/src/stub/src/i386-linux.kernel.vmlinuz.S b/src/stub/src/i386-linux.kernel.vmlinuz.S
index df6577d9..cc6cb013 100644
--- a/src/stub/src/i386-linux.kernel.vmlinuz.S
+++ b/src/stub/src/i386-linux.kernel.vmlinuz.S
@@ -108,7 +108,7 @@ section         LBZIMAGE
 
 section         LZIMAGE0
 
-// this checka20 stuff looks very unneccessary to me
+// this checka20 stuff looks very unnecessary to me
 checka20:
                 inc     edi             // change value
                 mov     [1 + ebp], edi  // store to 0x000000 (even megabyte)