diff --git a/scripts/check_lpn_solution.py b/scripts/check_lpn_solution.py
index bf022d3b9..575e4ab13 100755
--- a/scripts/check_lpn_solution.py
+++ b/scripts/check_lpn_solution.py
@@ -54,7 +54,7 @@
                 sol[var] = lit > 0
 
 if sat is None:
-    print("ERRROR could not recover solution from SAT output")
+    print("ERROR could not recover solution from SAT output")
     exit(-1)
 
 # print("Recovered SAT: ", sat)
diff --git a/scripts/translate_opb.py b/scripts/translate_opb.py
index 57b15fe64..4b878d5e1 100755
--- a/scripts/translate_opb.py
+++ b/scripts/translate_opb.py
@@ -103,7 +103,7 @@ def translate(self):
                 c.lhs[i][0] = -c.lhs[i][0]
             leq_translate(c)
         else:
-            print("ERRROR")
+            print("ERROR")
             exit(-1)
 
 
diff --git a/src/get_clause_query.cpp b/src/get_clause_query.cpp
index 2ae1dff0f..7e132a589 100644
--- a/src/get_clause_query.cpp
+++ b/src/get_clause_query.cpp
@@ -62,7 +62,7 @@ void GetClauseQuery::start_getting_constraints(bool _red, bool _simplified,
     simplified = _simplified;
     if (simplified) {
         if (solver->get_num_bva_vars() != 0) {
-            cout << "ERRROR! You must not have BVA variables for simplified CNF getting" << endl;
+            cout << "ERROR! You must not have BVA variables for simplified CNF getting" << endl;
             exit(-1);
         }
         release_assert(solver->get_num_bva_vars() == 0);
diff --git a/src/mpicosat/mpicosat.c b/src/mpicosat/mpicosat.c
index c32638630..bcd61c99b 100644
--- a/src/mpicosat/mpicosat.c
+++ b/src/mpicosat/mpicosat.c
@@ -7472,7 +7472,7 @@ picosat_mus_assumptions (PS * ps, void * s, void (*cb)(void*,const int*), int fi
 	  assert (res == 20);
 	  if (ps->verbosity > 1)
 	     fprintf (ps->out,
-		     "%ssuceeded to drop %d%s assumption %d\n",
+		     "%ssucceeded to drop %d%s assumption %d\n",
 		     ps->prefix, i, enumstr (i), work[i]);
 	  redundant[i] = 1;
 	  for (j = 0; j < nwork; j++)
@@ -7489,7 +7489,7 @@ picosat_mus_assumptions (PS * ps, void * s, void (*cb)(void*,const int*), int fi
 		  redundant[j] = -1;
 		  if (ps->verbosity > 1)
 		     fprintf (ps->out,
-			     "%salso suceeded to drop %d%s assumption %d\n",
+			     "%salso succeeded to drop %d%s assumption %d\n",
 			     ps->prefix, j, enumstr (j), work[j]);
 		}
 	    }
diff --git a/src/occsimplifier.cpp b/src/occsimplifier.cpp
index 3a8d2f338..cda3d94a1 100644
--- a/src/occsimplifier.cpp
+++ b/src/occsimplifier.cpp
@@ -5429,7 +5429,7 @@ void OccSimplifier::check_clauses_lits_ordered() const
         if (cl->freed() || cl->get_removed()) continue;
         for(uint32_t i = 1; i < cl->size(); i++) {
             if ((*cl)[i-1] >= (*cl)[i]) {
-                cout << "ERRROR cl: " << *cl << endl;
+                cout << "ERROR cl: " << *cl << endl;
                 assert(false);
             }
         }