diff --git a/corelib/src/toro3d/posegraph2.cpp b/corelib/src/toro3d/posegraph2.cpp
index 046a1c8d..061a9d93 100644
--- a/corelib/src/toro3d/posegraph2.cpp
+++ b/corelib/src/toro3d/posegraph2.cpp
@@ -54,8 +54,7 @@ typedef unsigned int uint;
 #define LINESIZE 81920
 
 
-//#define DEBUG(i) \
-//        if (verboseLevel>i) cerr
+//#define DEBUG(i) if (verboseLevel>i) cerr
 
 
 bool TreePoseGraph2::load(const char* filename, bool overrideCovariances){
diff --git a/corelib/src/toro3d/posegraph3.cpp b/corelib/src/toro3d/posegraph3.cpp
index 6426e04c..0bc01312 100644
--- a/corelib/src/toro3d/posegraph3.cpp
+++ b/corelib/src/toro3d/posegraph3.cpp
@@ -51,8 +51,7 @@ namespace AISNavigation {
 #define LINESIZE 81920
 
 
-//#define DEBUG(i) \
-//       if (verboseLevel>i) cerr
+//#define DEBUG(i) if (verboseLevel>i) cerr
 
 
 bool TreePoseGraph3::load(const char* filename, bool overrideCovariances, bool twoDimensions){
diff --git a/corelib/src/toro3d/treeoptimizer2.cpp b/corelib/src/toro3d/treeoptimizer2.cpp
index 035b69d3..1fb9bce6 100644
--- a/corelib/src/toro3d/treeoptimizer2.cpp
+++ b/corelib/src/toro3d/treeoptimizer2.cpp
@@ -51,8 +51,7 @@ using namespace std;
 
 namespace AISNavigation {
 
-//#define DEBUG(i) \
-//        if (verboseLevel>i) cerr
+//#define DEBUG(i) if (verboseLevel>i) cerr
 
 /** \brief A class (struct) to compute the parameterization of the vertex v **/
 struct ParameterPropagator{
diff --git a/corelib/src/toro3d/treeoptimizer3.cpp b/corelib/src/toro3d/treeoptimizer3.cpp
index 7177edf5..f704e6e0 100644
--- a/corelib/src/toro3d/treeoptimizer3.cpp
+++ b/corelib/src/toro3d/treeoptimizer3.cpp
@@ -50,8 +50,7 @@ using namespace std;
 
 namespace AISNavigation {
 
-//#define DEBUG(i) \
-//        if (verboseLevel>i) cerr
+//#define DEBUG(i) if (verboseLevel>i) cerr
 
 
 TreeOptimizer3::TreeOptimizer3(){
diff --git a/corelib/src/toro3d/treeoptimizer3_iteration.cpp b/corelib/src/toro3d/treeoptimizer3_iteration.cpp
index 40d2342e..2ee07e94 100644
--- a/corelib/src/toro3d/treeoptimizer3_iteration.cpp
+++ b/corelib/src/toro3d/treeoptimizer3_iteration.cpp
@@ -42,8 +42,7 @@ using namespace std;
 
 namespace AISNavigation {
 
-//#define DEBUG(i) \
-//        if (verboseLevel>i) cerr
+//#define DEBUG(i) if (verboseLevel>i) cerr
 
 //helper functions. Should I explain :-)?
 inline double max3( const double& a, const double& b, const double& c){