diff --git a/rskj-core/src/main/java/co/rsk/mine/BlockGasPriceRange.java b/rskj-core/src/main/java/co/rsk/mine/BlockGasPriceRange.java
index e69c688ffd..340a83b9b1 100644
--- a/rskj-core/src/main/java/co/rsk/mine/BlockGasPriceRange.java
+++ b/rskj-core/src/main/java/co/rsk/mine/BlockGasPriceRange.java
@@ -51,4 +51,9 @@ public Coin getUpperLimit() {
     public Coin getLowerLimit() {
         return lowerLimit;
     }
+
+    @Override
+    public String toString() {
+        return "[" + lowerLimit + "; " + upperLimit + "]";
+    }
 }
diff --git a/rskj-core/src/main/java/co/rsk/mine/MinimumGasPriceCalculator.java b/rskj-core/src/main/java/co/rsk/mine/MinimumGasPriceCalculator.java
index eff3c8e934..c0569a9f44 100644
--- a/rskj-core/src/main/java/co/rsk/mine/MinimumGasPriceCalculator.java
+++ b/rskj-core/src/main/java/co/rsk/mine/MinimumGasPriceCalculator.java
@@ -20,6 +20,8 @@
 
 import co.rsk.core.Coin;
 import co.rsk.mine.gas.provider.MinGasPriceProvider;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * This is the implementation of RSKIP-09
@@ -27,6 +29,8 @@
  */
 public class MinimumGasPriceCalculator {
 
+    private static final Logger logger = LoggerFactory.getLogger(MinimumGasPriceCalculator.class);
+
     private final MinGasPriceProvider minGasPriceProvider;
 
     public MinimumGasPriceCalculator(MinGasPriceProvider minGasPriceProvider) {
@@ -37,14 +41,16 @@ public Coin calculate(Coin previousMGP) {
         BlockGasPriceRange priceRange = new BlockGasPriceRange(previousMGP);
         Coin targetMGP = minGasPriceProvider.getMinGasPriceAsCoin();
         if (priceRange.inRange(targetMGP)) {
+            logger.debug("Previous MGP: {}. Target MGP: {} is in range: {}. Returning target MGP", previousMGP, targetMGP, priceRange);
             return targetMGP;
         }
 
         if (previousMGP.compareTo(targetMGP) < 0) {
+            logger.debug("Previous MGP: {}. Target MGP: {} is not in range: {}. Returning upper boundary: {}", previousMGP, targetMGP, priceRange, priceRange.getUpperLimit());
             return priceRange.getUpperLimit();
         }
 
+        logger.debug("Previous MGP: {}. Target MGP: {} is not in range: {}. Returning lower boundary: {}", previousMGP, targetMGP, priceRange, priceRange.getLowerLimit());
         return priceRange.getLowerLimit();
     }
-
 }