diff --git a/source/backend/plugin/CarlaPluginFluidSynth.cpp b/source/backend/plugin/CarlaPluginFluidSynth.cpp
index 95bfe3179..31124eec3 100644
--- a/source/backend/plugin/CarlaPluginFluidSynth.cpp
+++ b/source/backend/plugin/CarlaPluginFluidSynth.cpp
@@ -1563,7 +1563,7 @@ public:
                 float    vol   = pData->postProc.volume;
 
                 // Pan: Stereo only.
-                if ((pan != 0.0) and (q == 2))
+                if ((pan != 0.0) && (q == 2))
                 {
                     // left channel(s) reduce when pan to right
                     if ((pan > 0) && (i == 0))
diff --git a/source/backend/plugin/CarlaPluginLADSPADSSI.cpp b/source/backend/plugin/CarlaPluginLADSPADSSI.cpp
index f7bd8b1cb..9816d3da0 100644
--- a/source/backend/plugin/CarlaPluginLADSPADSSI.cpp
+++ b/source/backend/plugin/CarlaPluginLADSPADSSI.cpp
@@ -2134,7 +2134,7 @@ public:
                 float    vol   = pData->postProc.volume;
 
                 // Pan: Stereo, 3 ch (extra rear/bass), or Quadro.
-                if ((pan != 0.0) and ((q == 2) || (q == 3) || (q == 4)))
+                if ((pan != 0.0) && ((q == 2) || (q == 3) || (q == 4)))
                 {
                     // left channel(s) reduce when pan to right
                     if ((pan > 0) && ((i == 0) || ((i == 2) && (q == 4))))
@@ -2150,7 +2150,7 @@ public:
                 }
 
                 // Front-Rear: 3 ch (extra rear/bass), or Quadro.
-                if ((forth != 0.0) and ((q == 3) || (q == 4)))
+                if ((forth != 0.0) && ((q == 3) || (q == 4)))
                 {
                     // rear channel(s) reduce when moving forth to front
                     if ((forth > 0) && ((i == 2) || (i == 3)))
diff --git a/source/backend/plugin/CarlaPluginLV2.cpp b/source/backend/plugin/CarlaPluginLV2.cpp
index 90829ae1e..eea0f794c 100644
--- a/source/backend/plugin/CarlaPluginLV2.cpp
+++ b/source/backend/plugin/CarlaPluginLV2.cpp
@@ -4725,7 +4725,7 @@ public:
                 float    vol   = pData->postProc.volume;
 
                 // Pan: Stereo, 3 ch (extra rear/bass), or Quadro.
-                if ((pan != 0.0) and ((q == 2) || (q == 3) || (q == 4)))
+                if ((pan != 0.0) && ((q == 2) || (q == 3) || (q == 4)))
                 {
                     // left channel(s) reduce when pan to right
                     if ((pan > 0) && ((i == 0) || ((i == 2) && (q == 4))))
@@ -4741,7 +4741,7 @@ public:
                 }
 
                 // Front-Rear: 3 ch (extra rear/bass), or Quadro.
-                if ((forth != 0.0) and ((q == 3) || (q == 4)))
+                if ((forth != 0.0) && ((q == 3) || (q == 4)))
                 {
                     // rear channel(s) reduce when moving forth to front
                     if ((forth > 0) && ((i == 2) || (i == 3)))
diff --git a/source/backend/plugin/CarlaPluginNative.cpp b/source/backend/plugin/CarlaPluginNative.cpp
index 3651fa79b..80574501f 100644
--- a/source/backend/plugin/CarlaPluginNative.cpp
+++ b/source/backend/plugin/CarlaPluginNative.cpp
@@ -2432,7 +2432,7 @@ public:
                 float    vol   = pData->postProc.volume;
 
                 // Pan: Stereo, 3 ch (extra rear/bass), or Quadro.
-                if ((pan != 0.0) and ((q == 2) || (q == 3) || (q == 4)))
+                if ((pan != 0.0) && ((q == 2) || (q == 3) || (q == 4)))
                 {
                     // left channel(s) reduce when pan to right
                     if ((pan > 0) && ((i == 0) || ((i == 2) && (q == 4))))
@@ -2448,7 +2448,7 @@ public:
                 }
 
                 // Front-Rear: 3 ch (extra rear/bass), or Quadro.
-                if ((forth != 0.0) and ((q == 3) || (q == 4)))
+                if ((forth != 0.0) && ((q == 3) || (q == 4)))
                 {
                     // rear channel(s) reduce when moving forth to front
                     if ((forth > 0) && ((i == 2) || (i == 3)))