diff --git a/legacyworlds-server-beans-system/src/main/java/com/deepclone/lw/beans/sys/ConstantsRegistrarBean.java b/legacyworlds-server-beans-system/src/main/java/com/deepclone/lw/beans/sys/ConstantsRegistrarBean.java
index 75d3a9c..23bdad8 100644
--- a/legacyworlds-server-beans-system/src/main/java/com/deepclone/lw/beans/sys/ConstantsRegistrarBean.java
+++ b/legacyworlds-server-beans-system/src/main/java/com/deepclone/lw/beans/sys/ConstantsRegistrarBean.java
@@ -94,7 +94,7 @@ public class ConstantsRegistrarBean
 		cDesc = "Empire size limit (relative to the ideal size) beyond which things get tough.";
 		defs.add( new ConstantDefinition( hcNames[ 7 ] , cat , cDesc , 2.0 , 1.1 , true ) );
 		cDesc = "Happiness level below which strikes begin.";
-		defs.add( new ConstantDefinition( hcNames[ 8 ] , cat , cDesc , 0.25 , 0.0 , 1.0 ) );
+		defs.add( new ConstantDefinition( hcNames[ 8 ] , cat , cDesc , 0.5 , 0.0 , 1.0 ) );
 		cDesc = "Happiness change at each update, relative to the size of the population.";
 		defs.add( new ConstantDefinition( hcNames[ 9 ] , cat , cDesc , 0.001 , 0.00001 , 0.99999 ) );
 		cDesc = "Maximal population units for which happiness will change.";
diff --git a/legacyworlds-server-data/db-structure/parts/040-functions/050-computation.sql b/legacyworlds-server-data/db-structure/parts/040-functions/050-computation.sql
index ebc8ed6..0d6c1bb 100644
--- a/legacyworlds-server-data/db-structure/parts/040-functions/050-computation.sql
+++ b/legacyworlds-server-data/db-structure/parts/040-functions/050-computation.sql
@@ -301,21 +301,45 @@ $$ LANGUAGE plpgsql;
 
 
 
---
--- Production adjustment
---
-CREATE OR REPLACE FUNCTION verse.adjust_production( prod REAL , happiness REAL )
+/*
+ * Production adjustment
+ * ----------------------
+ *
+ * Adjust productions depending on a planet's happiness ratio. When the
+ * happiness ratio is greater than the game.happiness.strike constant, the
+ * production is not affected. However, under that threshold, the production
+ * decreases proportionally, until it reaches 0.
+ * 
+ * Parameters:
+ *		_prod		The production's valule
+ *		_h_ratio	The happiness ratio
+ *
+ * Returns:
+ *		?			The adjusted production value
+ */
+DROP FUNCTION IF EXISTS verse.adjust_production( REAL , REAL ) CASCADE;
+CREATE OR REPLACE FUNCTION verse.adjust_production( _prod REAL , _h_ratio REAL )
 	RETURNS REAL
+	LANGUAGE SQL
 	STRICT IMMUTABLE
 	SECURITY INVOKER
-AS $$
+AS $adjust_production$
+
 	SELECT ( CASE
 		WHEN $2 < sys.get_constant( 'game.happiness.strike' ) THEN
-			( $1 * ( 1 - ( $2 / sys.get_constant( 'game.happiness.strike' ) ) ) )::REAL
+			( $1 * $2 / sys.get_constant( 'game.happiness.strike' ) )::REAL
 		ELSE
 			$1
 	END );
-$$ LANGUAGE SQL;
+
+$adjust_production$;
+
+REVOKE EXECUTE
+	ON FUNCTION verse.adjust_production( REAL , REAL )
+	FROM PUBLIC;
+GRANT EXECUTE
+	ON FUNCTION verse.adjust_production( REAL , REAL )
+	TO :dbuser;
 
 
 --
diff --git a/legacyworlds-server-data/db-structure/tests/admin/040-functions/050-computation/020-adjust-production.sql b/legacyworlds-server-data/db-structure/tests/admin/040-functions/050-computation/020-adjust-production.sql
new file mode 100644
index 0000000..7059de1
--- /dev/null
+++ b/legacyworlds-server-data/db-structure/tests/admin/040-functions/050-computation/020-adjust-production.sql
@@ -0,0 +1,51 @@
+/*
+ * Test the verse.adjust_production() function
+ */
+BEGIN;
+	-- Create a table of input values
+	CREATE TABLE test_input(
+		prod		REAL ,
+		happ		REAL
+	);
+	
+	-- Set the happiness strike level to 50%
+	SELECT sys.uoc_constant( 'game.happiness.strike' , '(test)' , 'Happiness' , 0.5 );
+	
+	-- ***** TESTS BEGIN HERE *****
+	SELECT plan( 3 );
+	
+	INSERT INTO test_input VALUES
+		( 10 , 1 ) , ( 100 , 1 ) ,
+		( 10 , 0.9 ) , ( 100 , 0.9 ) ,
+		( 10 , 0.8 ) , ( 100 , 0.8 ) ,
+		( 10 , 0.7 ) , ( 100 , 0.7 ) ,
+		( 10 , 0.6 ) , ( 100 , 0.6 ) ,
+		( 10 , 0.5 ) , ( 100 , 0.5 );
+	SELECT diag_test_name( 'verse.adjust_production() - Production is unaffected when happiness >= game.happiness.strike' );
+	SELECT is_empty(
+		$$ SELECT * FROM test_input WHERE prod <> verse.adjust_production( prod , happ ); $$
+	);
+	DELETE FROM test_input;
+	
+	INSERT INTO test_input VALUES
+		( 10 , 0.5 ) , ( 10 , 0.4 ) ,
+		( 10 , 0.3 ) , ( 10 , 0.2 ) ,
+		( 10 , 0.1 ) , ( 10 , 0 );
+	SELECT diag_test_name( 'verse.adjust_production() - Production is unaffected when happiness >= game.happiness.strike' );
+	SELECT set_eq(
+		$$ SELECT rank( ) OVER( ORDER BY happ ) AS r1 ,
+				rank( ) OVER ( ORDER BY verse.adjust_production( prod , happ ) ) AS r2
+			FROM test_input; $$ ,
+		$$ VALUES ( 1 , 1 ) , ( 2 , 2 ) , ( 3 , 3 ) , ( 4 , 4 ) , ( 5 , 5 ) , ( 6 , 6 ) $$ 
+	);
+	DELETE FROM test_input;
+
+	SELECT diag_test_name( 'verse.adjust_production() - Happiness = 0 => production = 0' );
+	INSERT INTO test_input VALUES
+		( 1 , 0 ) , ( 10 , 0 ) , ( 100 , 0 ) , ( 1000 , 0 ) , ( 10000 , 0 );
+	SELECT is_empty(
+		$$ SELECT * FROM test_input WHERE verse.adjust_production( prod , happ ) <> 0; $$
+	);
+
+	SELECT * FROM finish( );
+ROLLBACK;
\ No newline at end of file
diff --git a/legacyworlds-server-data/db-structure/tests/user/040-functions/050-computation/020-adjust-production.sql b/legacyworlds-server-data/db-structure/tests/user/040-functions/050-computation/020-adjust-production.sql
new file mode 100644
index 0000000..95ecf3e
--- /dev/null
+++ b/legacyworlds-server-data/db-structure/tests/user/040-functions/050-computation/020-adjust-production.sql
@@ -0,0 +1,12 @@
+/*
+ * Test privileges on verse.adjust_production()
+ */
+BEGIN;
+
+	SELECT plan( 1 );
+	
+	SELECT diag_test_name( 'verse.adjust_production( ) - EXECUTE privilege' );
+	SELECT lives_ok( $$ SELECT verse.adjust_production( 1 , 1 ) $$ );
+	
+	SELECT * FROM finish( );
+ROLLBACK;
\ No newline at end of file