diff --git a/netlist.h b/netlist.h
index d6fe7358a..ad104b30a 100644
--- a/netlist.h
+++ b/netlist.h
@@ -2624,7 +2624,7 @@ class NetProc : public virtual LineInfo {
 	//
 	// nex_map holds the set of nexuses that are driven by this
 	// process, nex_out holds the accumulated outputs from this and
-	// preceeding sequential processes (i.e statements in the same
+	// preceding sequential processes (i.e statements in the same
 	// block), enables holds the accumulated clock/gate enables,
 	// and bitmasks holds the accumulated masks that flag which bits
 	// are unconditionally driven (i.e. driven by every clause in
diff --git a/nodangle.cc b/nodangle.cc
index ea5c4d25e..1e7551e27 100644
--- a/nodangle.cc
+++ b/nodangle.cc
@@ -140,7 +140,7 @@ static void check_is_floating(NetNet*sig)
       if (sig->type() == NetNet::IMPLICIT_REG) return;
       if (sig->type() == NetNet::REG) return ;
 
-	// Asignments drive a signal.
+	// Assignments drive a signal.
       if (sig->peek_lref() > 0) return;
 
       for (unsigned idx = 0 ; idx < sig->pin_count() ; idx += 1) {
diff --git a/vhdlpp/architec_debug.cc b/vhdlpp/architec_debug.cc
index 1a42aea28..7c5e5a711 100644
--- a/vhdlpp/architec_debug.cc
+++ b/vhdlpp/architec_debug.cc
@@ -126,7 +126,7 @@ void InitialStatement::dump(ostream&out, int indent) const
 
 void FinalStatement::dump(ostream&out, int indent) const
 {
-      out << setw(indent) << "" << "FinalStatment file=" << get_fileline() << endl;
+      out << setw(indent) << "" << "FinalStatement file=" << get_fileline() << endl;
 
       StatementList::dump(out, indent);
 }
diff --git a/vhdlpp/architec_elaborate.cc b/vhdlpp/architec_elaborate.cc
index 5ec87becc..27d09ffbc 100644
--- a/vhdlpp/architec_elaborate.cc
+++ b/vhdlpp/architec_elaborate.cc
@@ -67,11 +67,11 @@ int Architecture::elaborate(Entity*entity)
 
 	    for(SubHeaderList::const_iterator it = subp_list.begin();
 			it != subp_list.end(); ++it) {
-        	errors += (*it)->elaborate();
+			errors += (*it)->elaborate();
 	    }
       }
 	// Create 'initial' and 'final' blocks for implicit
-	// initalization and clean-up actions
+	// initialization and clean-up actions
       if(!initializers_.empty())
 	    statements_.push_front(new InitialStatement(&initializers_));
 
diff --git a/vhdlpp/architec_emit.cc b/vhdlpp/architec_emit.cc
index e5a3a1c61..46695543e 100644
--- a/vhdlpp/architec_emit.cc
+++ b/vhdlpp/architec_emit.cc
@@ -103,7 +103,7 @@ int Architecture::emit(ostream&out, Entity*entity)
 
 		// Do not emit unbounded functions, we will just need fixed instances later
 		if(!subp->unbounded())
-        	    errors += subp->emit_package(out);
+		    errors += subp->emit_package(out);
 	    }
       }
 
diff --git a/vvp/README.txt b/vvp/README.txt
index a6c014bba..a6da64994 100644
--- a/vvp/README.txt
+++ b/vvp/README.txt
@@ -117,7 +117,7 @@ The <file> and <lineno> are the location of the instantiation of this
 scope. For a module, it is the location of the instance.
 
 The <def-file> and <def-lineno> is the source file and line number for
-the defintion of the scope. For modules, this is where the module is
+the definition of the scope. For modules, this is where the module is
 defined instead of where it is instantiated.
 
 The <is-cell> flag is only useful for module instances. It is true